Provide an appropriate response.18.9% of what number is 497.09? (nearest whole number) Use the percentage proportion.
A. 9,395
B. 263
C. 2,630
D. 940
E. none of the above
Answer: C
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Write the equation of the indicated line. Write the equation in slope-intercept form.The line parallel to 7x - 8y = 10 that passes through (5, 5)
A. y = 
x + 
B. y = - 
x + 
C. y = 
x - 
D. y = 
x + 5
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. 29.7%; $467 million B. 31.4%; $464 million C. 28.1%; $470 million D. 26.5%; $469 million
If A denotes the area of the sector of a circle of radius r formed by the central angle ?, find the missing quantity. If necessary, round the answer to two decimal places.r = 11.7 centimeters, ? = 
radians, A = ?
A. 35.8 cm2 B. 3.1 cm2 C. 71.6 cm2 D. 11.4 cm2
In the problem, t is a real number and P = (x, y) is the point on the unit circle that corresponds to t. Find the exact value of the indicated trigonometric function of t.(- 
, - 
)Find cot t.
A. - 
B. 
C. 
D. - 