Sketch the graph of the function 
.
?
A. ?
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B. ?
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C. ?
?
D. ?
?
E. ?
Answer: C
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Solve the problem.Two points A and B are on opposite sides of a building. A surveyor selects a third point C to place a transit. Point C is 50 feet from point A and 74 feet from point B. The angle ACB is 53°. How far apart are points A and B?
A. 101 ft B. 75.8 ft C. 111.5 ft D. 59.4 ft
Perform the indicated operation.9 lb 6 oz × 5
A. 45 lb 14 oz B. 14 lb 14 oz C. 45 lb 6 oz D. 46 lb 14 oz
Write each expression in factored form as an algebraic expression of a single trigonometric function.csc 2 x - 1
A. cot x B. (cot x + 1)(cot x - 1) C. csc x - 1 D. (csc x + 1)(csc x - 1)
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. 28.1%; $470 million B. 29.7%; $467 million C. 26.5%; $469 million D. 31.4%; $464 million