Multiply.× 
A. 0
B. 8
C. 0.04
D. 8.005
Answer: C
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Solve.A train leaves a town traveling at a speed of 20 miles per hour. Thirty minutes later another train, traveling at 60 miles per hour, leaves the same town in the same direction on a parallel track. How long will it take this train to catch up?
A. 36 min B. 40 min C. 45 min D. 60 min
Write the expression as a logarithm of a single expression. Assume that variables represent positive numbers.log38 + log311
A. log319 B. log388 C. log619 D. log688
Solve the problem.The price p and x, the quantity of a certain product sold, obey the demand equation p = - 
x + 100, {x|0 ? x ? 1000}a) Express the revenue R as a function of x.b) What is the revenue if 450 units are sold?c) Graph the revenue function using a graphing utility.d) What quantity x maximizes revenue? What is the maximum revenue?e) What price should the company charge to maximize revenue?
What will be an ideal response?
Use the Pythagorean theorem to find the length of the third side of the right triangle. Leave any irrational answers in radical form.
A. 12 B. 11 C. 15 D. 14