Determine whether the proportion is true or false.
= 
A. True
B. False
Answer: B
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An equation of the terminal side of an angle ? in standard position is given along with a restriction on x. Find the indicated trigonometric function value of ?. Do not use a calculator.
, x ? 0; Find sin ?.
A. 9
B. 
C. 
D. 
Solve the problem.The demand equation for a certain product is P = 25 - 0.001x, where x is the number of units sold per week and P is the price in dollars at which one is sold. The weekly revenue R is given by 
What number of units sold produces a weekly revenue of $80,000?
A. 2870 units B. 79,975,000 units C. 3768 units D. 21,232 units
Identify where f is increasing or where f is decreasing, as indicated. Round your answer to two decimal places when appropriate.f(x) = -4x2 + 8x - 9; decreasing
A. [-1, ?) B. [1, ?) C. (-?,1] D. (-?, -1]
Simplify the expression. Express the answer so that only positive exponents occur. Assume that all variables are positive.(16x8y4)1/2
A. 4x4y B. 4x4y2 C. x4y2 D. 4x8y2