Simplify the expression by combining like terms, if possible.-6(10r + 5) + 9(10r + 2)
A. -90r
B. 30r + 5
C. 4r - 1
D. 30r - 12
Answer: D
Mathematics
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A. (5, -7); 5 B. (0, 0); 0 C. (-7, 0); -7 D. (5, 0); 5
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Find the requested value.f(8) for f(x) = 
A. -24 B. 7 C. 64 D. 45
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