Solve the problem.A contractor mixes concrete from bags of pre-mix for small jobs. How many bags with 5% cement should he mix with 5 bags of 18% cement to produce a mix containing 10% cement?
A. 13 bags
B. 10 bags
C. 18 bags
D. 8 bags
Answer: D
Mathematics
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Write in scientific notation.0.0000038717
A. 3.8717 × 10-7 B. 3.8717 × 10-5 C. 3.8717 × 10-6 D. 3.8717 × 106
Mathematics
Write the exponential equation as an equation involving a logarithm.85/3 = 32
A. log58 = 
B. log328 = 
C. 
= 8
D. log832 = 
Mathematics
Find the given value.Find (f ? g)(4) when f(x) = 
and g(x) = x + 7.
A. 
B. - 2
C. 2
D. - 
Mathematics
Find the real solutions of the equation by factoring.3x4 = 24x
A. {0, 3, 2} B. {-2, 0, 2} C. {0, 2} D. {0}
Mathematics