Add or subtract as indicated.(7s + 13t) + (2t - 5s)
A. 2s + 15t
B. 17st
C. 12s + 15t
D. 9s + 8
Answer: A
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?Which of the following is the best estimate of the product: 12
× 9
.
?
A. ?12×9 B. ?131 C. ?127 D. ?140 E. ?117
Find the standard form of the equation of the ellipse and give the location of its foci.
Center at (-1, 1)
A. 
+ 
= 1
foci at (-1 + 3
, 1) and (-1 - 3
, 1)
B. 
+ 
= 1
foci at (- 3
, 1) and (3
, 1)
C. 
+ 
= 1
foci at (-1 + 3
, -1) and (-1 - 3
, -1)
D. 
+ 
= 1
foci at (1 + 3
, -1) and (1 - 3
, -1)
Solve the problem.How long would it take to drive 720 kilometers if your average rate of speed was 80 kilometers per hour? Use the formula d = rt.
A. 9 hr B. 80 hr C. 10 hr D. 576 hr
Translate the percent problem to a basic percent equation using x for the unknown value. Do not solve.64 out of what number is 48%?
A. 0.48 ÷ x = 64 B. x ? 48 = 64 C. x ? 0.48 = 64 D. 64 ? 0.48 = x