Exam 2: Linear and Quadratic Functions

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Determine, without graphing, whether the given quadratic function has a maximum value or a minimum value and then find that value. - f(x)=x26f ( x ) = x ^ { 2 } - 6

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Solve the inequality. Express your answer using interval notation. Graph the solution set. - 7k99>5| 7 k - 9 | - 9 > - 5  Solve the inequality. Express your answer using interval notation. Graph the solution set. - | 7 k - 9 | - 9 > - 5

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Determine the average rate of change for the function. - h(x)=34x3h ( x ) = - \frac { 3 } { 4 } x - 3

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Graph the function. State whether it is increasing, decreasing, or constant.. - f(x)=12x2f ( x ) = \frac { 1 } { 2 } x - 2  Graph the function. State whether it is increasing, decreasing, or constant.. - f ( x ) = \frac { 1 } { 2 } x - 2

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Solve the problem. -The manufacturer of a CD player has found that the revenue RR (in dollars) is R(p)=5p2+1,460pR ( p ) = - 5 p ^ { 2 } + 1,460 p , when the unit price is pp dollars. If the manufacturer sets the price pp to maximize revenue, what is the maximum revenue to the nearest whole dollar?

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Write the word or phrase that best completes each statement or answers the question. -The one-day temperatures for 12 world cities along with their latitudes are shown in the table below. Make a scatter diagram for the data. Describe what happens to the one-day temperatures as the latitude increases. City Temperature (F) Latitud Oslo, Norway 3 5 Seattle, WA 5 4 Anchorage, AK 4 6 Paris, France 6 4 Vancouver, Canada 5 4 London, England 4 5 Tokyo, Japan 5 3 Cairo, Egypt 8 3 Mexico City, Mexico 8 1 Miami, FL 8 2 New Delhi, India 9 2 Manila, Philippines 9 1 Latitude (degrees)  Write the word or phrase that best completes each statement or answers the question. -The one-day temperatures for 12 world cities along with their latitudes are shown in the table below. Make a scatter diagram for the data. Describe what happens to the one-day temperatures as the latitude increases.  \begin{array}{l} \begin{array} { c | c | c }  \text { City } & \text { Temperature (F) } & \text { Latitud } \\ \hline \text { Oslo, Norway } & 30 ^ { \circ } & 59 ^ { \circ } \\ \text { Seattle, WA } & 57 ^ { \circ } & 47 ^ { \circ } \\ \text { Anchorage, AK } & 40 ^ { \circ } & 61 ^ { \circ } \\ \text { Paris, France } & 61 ^ { \circ } & 48 ^ { \circ } \\ \text { Vancouver, Canada } & 54 ^ { \circ } & 49 ^ { \circ } \\ \text { London, England } & 48 ^ { \circ } & 51 ^ { \circ } \\ \text { Tokyo, Japan } & 55 ^ { \circ } & 35 ^ { \circ } \\ \text { Cairo, Egypt } & 82 ^ { \circ } & 30 ^ { \circ } \\ \text { Mexico City, Mexico } & 84 ^ { \circ } & 19 ^ { \circ } \\ \text { Miami, FL } & 81 ^ { \circ } & 25 ^ { \circ } \\ \text { New Delhi, India } & 95 ^ { \circ } & 28 ^ { \circ } \\ \text { Manila, Philippines } & 93 ^ { \circ } & 14 ^ { \circ } \end{array}\\ \text { Latitude (degrees) } \end{array}     \text { Temperature } ( \mathrm { F } ) ^ { \circ }  Temperature (F)\text { Temperature } ( \mathrm { F } ) ^ { \circ }

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Graph the function using its vertex, axis of symmetry, and intercepts. - f(x)=2x220x53f(x)=-2 x^{2}-20 x-53  Graph the function using its vertex, axis of symmetry, and intercepts. - f(x)=-2 x^{2}-20 x-53

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Solve the inequality. Express your answer using interval notation. Graph the solution set. - x<4| x | < 4  Solve the inequality. Express your answer using interval notation. Graph the solution set. - | x | < 4

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Use the slope and y-intercept to graph the linear function. - g(x)=2x+1g(x)=-2 x+1  Use the slope and y-intercept to graph the linear function. - g(x)=-2 x+1

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Use the slope and y-intercept to graph the linear function. - p(x)=x4p(x)=-x-4  Use the slope and y-intercept to graph the linear function. - p(x)=-x-4

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Determine if the type of relation is linear, nonlinear, or none. -Determine if the type of relation is linear, nonlinear, or none. -

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Solve the problem. -You have 64 feet of fencing to enclose a rectangular plot that borders on a river. If you do not fence the side along the river, find the length and width of the plot that will maximize the area.

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Graph the function f by starting with the graph of y = x2 and using transformations (shifting, compressing, stretching, and/or reflection). - f(x)=29x2+49x1f(x)=\frac{2}{9} x^{2}+\frac{4}{9} x-1  Graph the function f by starting with the graph of y = x2 and using transformations (shifting, compressing, stretching, and/or reflection). - f(x)=\frac{2}{9} x^{2}+\frac{4}{9} x-1

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Find the zeros of the quadratic function by completing the square. List the x-intercepts of the graph of the function. - g(x)=25x2+30x+8g ( x ) = 25 x ^ { 2 } + 30 x + 8

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Write the word or phrase that best completes each statement or answers the question. -The following data represents the number of employees at a company at the start of each year since the company began. month 1 2 3 4 5 6 7 number 3 172 403 571 823 1061 1194 Using the line of best fit for the data set, predict the number of employees at the start of the 10th year.

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employees each year. Choose the one alternative that best completes the statement or answers the question. Use factoring to find the zeros of the quadratic function. List the x-intercepts of the graph of the function. - f(x)=3x24x7f ( x ) = 3 x ^ { 2 } - 4 x - 7

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Solve the inequality. Express your answer using interval notation. Graph the solution set. - x+2+48| x + 2 | + 4 \geq 8  Solve the inequality. Express your answer using interval notation. Graph the solution set. - | x + 2 | + 4 \geq 8

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Solve the problem. -The owner of a video store has determined that the profits P of the store are approximately given by where x is the number of videos rented daily. Find the maximum profit to the nearest P(x)=x2+150x+54P ( x ) = - x ^ { 2 } + 150 x + 54 dollar.

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Choose the one alternative that best completes the statement or answers the question. Find the complex zeros of the quadratic function. - g(x)=4x2x+3g ( x ) = 4 x ^ { 2 } - x + 3

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Solve the problem. -If a rocket is propelled upward from ground level, its height in meters after tt seconds is given by h=9.8t2+49th = - 9.8 \mathrm { t } ^ { 2 } + 49 \mathrm { t } . During what interval of time will the rocket be higher than 58.8 m58.8 \mathrm {~m} ?

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