Add or subtract.(3x2 + 7x - 8) + (5x2 - 11x + 10)
A. 8x2 - 4x + 2
B. 8x2 - 4x + 18
C. 8x2 + 4x + 2
D. 8x2 - 18x + 2
Answer: A
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Evaluate the integral.
A. 9.48 B. 55.2 C. 40.2 D. 6.70
Either the dimensions of two matrices or the matrices themselves are given. Find the dimensions of the product AB and the product BA. If either is not defined, say so.A = 
; B = 
.
A. AB is 2 × 2; BA is 1 × 1. B. AB is not defined; BA is 2 × 2. C. AB is 1 × 1; BA is not defined. D. AB is 1 × 1; BA is 2 × 2.
Solve the problem.A rectangular Persian carpet has a perimeter of 248 in. The length of the carpet is 30 inches more than the width. What are the dimensions of the carpet? (P = 2l + 2w)
A. 94 in., 124 in. B. 77 in., 107 in. C. 47 in., 77 in. D. 109 in., 139 in.
Given f(x) and g(x), find the indicated composition and evaluate.f(x) = 7x + 9; g(x) = 5x + 5Find (f ? g)(4).
A. 62 B. 925 C. 184 D. 190