Exam 2: Functions and Graphs
Exam 1: Equations, Inequalities, and Modeling531 Questions
Exam 2: Functions and Graphs365 Questions
Exam 3: Polynomial and Rational Functions396 Questions
Exam 4: Exponential and Logarithmic Functions203 Questions
Exam 5: The Trigonometric Functions398 Questions
Exam 6: Trigonometric Identities and Conditional Equations674 Questions
Exam 7: Applications of Trigonometry332 Questions
Exam 8: Systems of Equations and Inequalities293 Questions
Exam 9: Matrices and Determinants218 Questions
Exam 10: The Conic Sections218 Questions
Exam 11: Sequences, Series, and Probability338 Questions
Exam 12: Basic Algebra Review226 Questions
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Solve the problem.
-If y varies directly as x and inversely as the square root of w, and y = 72 when x = 8 and w = 12, find y when x = 5 and w = 27.
Free
(Multiple Choice)
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Correct Answer:
A
For the pair of functions, perform the indicated operation.
-f(x) =
Find f · g.

(Multiple Choice)
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Write a formula to express the relationship. Use k as the constant of variation.
-The force of attraction between an object of fixed mass and a second object of mass m varies directly as m and inversely as the square of the distance d between the two objects.
(Multiple Choice)
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Solve the problem.
-If f varies jointly as
and h, and f = -96 when q = 4 and h = -3, find k.

(Multiple Choice)
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Evaluate.
-Find (f/g)(-2) given f(x) = 4x - 6 and g(x) =
+ 14x + 5.

(Multiple Choice)
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Find the requested function value.
-Find
(-8) when f(x) = 8x - 2 and g(x) =
+ 2x - 7.


(Multiple Choice)
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Use the minimum and maximum features of a graphing calculator to find approximately the intervals on which the
function is increasing or decreasing. Round your values to two decimal places, if necessary.
-y =
+ 18

(Multiple Choice)
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Write the equation of the graph after the indicated transformation(s).
-The graph of
is vertically stretched by a factor of 5, and the resulting graph is reflected across the x-axis.

(Multiple Choice)
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Write a formula to express the relationship. Use k as the constant of variation.
-The height h of a cone with a fixed volume varies inversely as the square of its radius r.
(Multiple Choice)
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Solve the problem.
-A salesperson gets a commission of $1600 for the first $10,000 of sales, and then $800 for each additional $10,000 or partial of sales. Let S(x) represent the commission on x dollars of sales. Find the value of S(75,000).
(Multiple Choice)
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Find the indicated composition of functions.
-Let f = (-7, -9), (-1, -7), (7, -2) and g = (-9, 1), (-2, 8), (9, 9) . Find 

(Multiple Choice)
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Translate the given formula to English.
-P = nb, where P is the perimeter of a regular polygon with n sides each of length b.
(Essay)
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Provide an appropriate response.
-Explain in your own words why g(x + h) is not the same as g(x) + h.
(Essay)
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For the given pair of variables determine whether a is a function of b, b is a function of a, both, or neither.
-a is the radius of any spherical bowling ball, and b is its volume.
(Multiple Choice)
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Solve the problem.
-At Allied Electronics, production has begun on the X-15 Computer Chip. The total cost function is given by C(x) = 9x + 16 and the total profit function is given by P(x) =
+ 35x - 16, where x represents the number
Of boxes of computer chips produced. The total revenue function, R(x), is such that R(x) = C(x) + P(x). Find R(x).

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