Factor by grouping.x3 + 5x2 + 7x + 35
A. (x2 + 7)(x - 5)
B. (x2 + 7)(x + 5x)
C. (x3 + 7)(x + 5)
D. (x2 + 7)(x + 5)
Answer: D
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?Express the slope of the line containing the points (0, 0), (8, 500) if x represents the time (in hours) and y represents the number of miles driven. ?
A. ?250 miles driven in 4 hours. B. ?62.5 miles driven per hour. C. ?Both a and b D. ?125 miles driven per 1/2 hour. E. ?None of the above.
Factor by grouping.15a3 + 6a2b - 20ab2 - 8b3
A. (15a2 - 4b2)(a + 2b) B. (3a2 + 4b2)(5a - 2b) C. (3a2 - 4b2)(5a + 2b) D. (3a2 - 4b)(5a + 2b)
Factor out the variable that is raised to the smaller exponent.x-7 + 8x-2
A. x-7(1 + 8x5) B. x-7(1 + 8x-5) C. x-7(x + 8x5) D. x-7(8x5)
Evaluate the expression according to the replacement value given.
; replace P with 144.
A. 20,736 B. 12 C. 288 D. 72