Evaluate the expression using a rule for exponents.(-8)1
A. 1
B. 8
C. -1
D. -8
Answer: D
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Provide an appropriate response.You are finding the partial fraction decomposition of the expression 
.You should ...
A. Solve the equation x3 - 11x + 30 = A(x - 7) + B(x - 6) B. Solve the equation x3 - 11x + 30 = (Ax + B)(x2 - 13x + 42) C. Use long division to divide the numerator by the denominator D. Solve the equation x2 - 13x + 42 = (Ax + B)(x3 - 11x + 30)
What number is 90% of 400?
A. 1,800 B. 360 C. 36,000 D. 460 E. 18,000
Solve the problem.Suppose that the radius r and volume V = 
?r3 of a sphere are differentiable functions of t. Write an equation that relates dV/dt to dr/dt.
A. 
= 4?r2
B. 
= 4?
C. 
= 
?r2
D. 
= 3r2
Solve.How many ways can a president, vice-president, secretary, and treasurer be chosen from a club with 10 members?
A. 24 B. 40 C. 210 D. 5040