Factor out the largest common factor.a(8 - b) + c(8 - b)
A. (8 - b)(a + c)
B. a(8 - b) + c
C. a(8 - b) - c
D. (8 - b)(a - c)
Answer: A
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Factor the trinomial completely.2x2 - 12x + 16
A. 2(x - 8)(x + 1) B. (x - 2)(2x - 8) C. (2x - 4)(x - 4) D. 2(x - 2)(x - 4)
Solve the problem.A force of 1300 lb compresses a spring from its natural length of 15 in. to a length of 14 in. How much work is done in compressing it from 14 in. to 7 in.?
A. 41,000 lb?in. B. 0.024 lb?in. C. 82,000 lb?in. D. 32,000 lb?in.
Decide whether the figure is convex or concave.
A. Convex B. Concave
Express the number in scientific notation and in floating-point notation. ? 68 ?
A. Scientific notation: 
Floating point notation: 6800 05
B. Scientific notation:
Floating point notation: 68 02
C. Scientific notation:
Floating point notation: 0.68 07
D. Scientific notation:
Floating point notation: 6.8 03
E. Scientific notation:
Floating point notation: 6.8 03