Simplify the expression. Assume that all variables are positive when they appear.-9 + 6

A. 21
B. -3
C. -21
D. 39


Answer: A

Mathematics

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Perform the indicated operations. If possible, reduce the answer to its lowest terms. ? 

A. 7
B. 3
C. 1
D. 3 

Mathematics

Identify the degree and leading coefficient of the polynomial.f(x) = 6x4 + 9x3 + 5

A. Degree: 6; leading coefficient: 4 B. Degree: 8; leading coefficient: 6 C. Degree: 4; leading coefficient: 6 D. Degree: 7; leading coefficient: 6

Mathematics

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?

Mathematics

Complete.7040 yd =  mi

A. 1
B. 7
C. 4
D. 21,120

Mathematics