Write an equation to describe the variation. Use k for the constant of proportionality.p varies directly as the square of q and inversely as the cube of r.
A. p + q2 - r3 = k
B. p = 
C. pq2r3 = k
D. p = 
Answer: B
Mathematics
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Evaluate.9 - (5 + 3)
A. 17 B. 16 C. 7 D. 1
Mathematics
Write the exponential equation as an equation involving a common logarithm or a natural logarithm.102 = 100
A. log2
= 10
B. log2
= 100
C. log 
= 2
D. log 
= 100
Mathematics
Solve the problem.Cindy has scores of 73, 83, 85, and 89 on her biology tests. Use a compound inequality to find the range of scores she can make on her final exam to receive a C in the course. The final exam counts as two tests, and a C is received if the course average is between 70 and 79.
A. 10 ? final score ? 32.5 B. 45 ? final score ? 72 C. 90 ? final score ? 144 D. 70 ? final score ? 79
Mathematics
Find the indicated term of the binomial expansion.5th term; (3x + 2)5
A. 360x2 B. 120x C. 160 D. 240x
Mathematics