Exam 1: Functions and Limits

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Let f(x)=x26x+5f(x)=x^{2}-6 x+5 and g(x)=x+5g(x)=\sqrt{x+5} . Find (gg)(20)\left(g^{\circ} g\right)(20) .

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Use the laws of logarithms to expand the expression. ln (x+5x6)12\left(\frac{x+5}{x-6}\right)^{\frac{1}{2}}

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Find the exact value of the expression. log520+log5356log52\log _{5} 20+\log _{5} 35-6 \log _{5} 2

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Which of the following graphs is neither even nor odd?

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Find a formula for the inverse of the function. y=ln(x+6)y=\ln (x+6)

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Suppose that the graph of y=log2xy=\log _{2} x is drawn on a coordinate grid where the unit of measurement is an inch. How many miles to the right of the origin do we have to move before the height of the curve reaches 3 ft? Rounded to the nearest mile.

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The graphs of f(x)f(x) and g(x)g(x) are given. Find the values of f(4)f(-4) and g(3)g(3) .  The graphs of  f(x)  and  g(x)  are given. Find the values of  f(-4)  and  g(3)  .

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Determine whether the function whose graph is given is even, odd, or neither. Determine whether the function whose graph is given is even, odd, or neither.

(Multiple Choice)
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Find the inverse of f. Then sketch the graphs of f and f1f^{-1} on the same set of axes. f(x) = cos1(x3)\cos ^{-1}\left(\frac{x}{3}\right) , 3x3-3 \leq x \leq 3

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Find the inverse of F) Then sketch the graphs of f and f1f^{-1} on the same set of axes. f(x)=1x2f(x)=\sqrt{1-x^{2}} , x0x \geq 0

(Multiple Choice)
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An open rectangular box with volume 2 m3\mathrm{m}^{3} has a square base. Express the surface area of the box as a function S(x)S(x) of the length XX of a side of the base.

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Find the inverse function of f(x)=x+12x+1f(x)=\frac{x+1}{2 x+1} .

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Starting with the graph of y=exy=e^{x} , write the equation of the graph that results from shifting 5 units right.

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If a bacteria population starts with 100 bacteria and doubles every three hours, then the number of bacteria after t hours is n=f(t)=100(2t3)n=f(t)=100\left(2^{\frac{t}{3}}\right) . When will the population reach 35,000? Round the answer to the nearest tenth.

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Find the points of intersection of the graphs of the functions. Express your answers accurate to five decimal places. f (x) = 0.5 x3x^{3} - 1.7 x2x^{2} + 2.3x - 2; g(x)g(x) = 2.8x - 4.8

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Find the domain of the function. f(x)=362x2f(x)=\sqrt{36-2 x^{2}}

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A spherical balloon with radius rr inches has volume 4πr334 \frac{\pi r^{3}}{3} . Find a function that represents the amount of air required to inflate the balloon from a radius of 4πr334 \frac{\pi r^{3}}{3} inches to a radius of r+3r+3 inches.

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The graph of the function ff follows. Choose the graph of y=f(x2)+1y=f\left(\frac{x}{2}\right)+1  The graph of the function  f  follows. Choose the graph of  y=f\left(\frac{x}{2}\right)+1

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By cutting away identical squares from each corner of a rectangular piece of cardboard and folding up the resulting flaps, an open box can be made. If the cardboard is 18 in. long and 9 in. wide and the square cutaways have dimensions of x in. by x in., find a function that gives the volume of the resulting box. By cutting away identical squares from each corner of a rectangular piece of cardboard and folding up the resulting flaps, an open box can be made. If the cardboard is 18 in. long and 9 in. wide and the square cutaways have dimensions of x in. by x in., find a function that gives the volume of the resulting box.

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Scientists have discovered that a linear relationship exists between the amount of flobberworm mucus secretions and the air temperature. When the temperature is 65°F, the flobberworms each secrete 16 grams of mucus a day; when the temperature is 95°F, they each secrete 22 grams of mucus a day. Find a function M(t) that gives the amount of mucus secreted on a given day, where t is the temperature of that day in degrees Fahrenheit.

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