Graph the function.f(x) = -3x 
A. 
B. 
C. 
D. 
Answer: C
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Find an equation for the line tangent to the given curve at the indicated point.y = x2 - 4 at (-2, 0)
A. y = -4x - 12 B. y = -4x - 8 C. y = -2x - 8 D. y = -4x - 16
Solve the problem.The population of a small country grows according to the function 
where t is measured in years. How many people will the country have after 8 years? (Round to the nearest unit.)
A. 916,291 B. 1,491,825 C. 397,940 D. 2,511,886
Solve the equation.log3 
= x
A. 
B. 
C. 
D. 
Solve the problem.Economists use what is called a Leffer curve to predict the government revenue for tax rates from 0% to 100%. Economists agree that the end points of the curve generate 0 revenue, but disagree on the tax rate that produces the maximum revenue. Suppose an economist produces this rational function 
where R is revenue in millions at a tax rate of x percent. Use a graphing calculator to graph the function. What tax rate produces the maximum revenue? What is the maximum revenue?
A. 30.9%; $382 million B. 38.4%; $383 million C. 27.0%; $379 million D. 28.8%; $272 million