Use a graph to approximate the solutions to the equation within 0.1. x3 + 3x2 = 3x + 9
A. 3, 1.7, -1.7
B. -3, 1.8, -1.8
C. -3, 1.7, -1.7
D. 3, 1.6, -1.6
Answer: C
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Solve.Body mass index is given by the formula I = 
, with W being the person's weight (in pounds). Mary's height is 63 in. What weights W will allow Mary to keep her body mass index I between 18.5 and 25? Round the answer to the nearest tenth of a pound.
A. 123 lb < W < 146.9 lb B. 104.2 lb < W < 140.8 lb C. 1.7 lb < W < 2.2 lb D. 95.3 lb < W < 127 lb
Find a formula for the nth term of the sequence.7, -7, 7, -7, 7 (7's with alternating signs)
A. an = 7(-1)n+1 B. an = 7(-1)2n-1 C. an = 7(-1)2n+1 D. an = 7(-1)n
Find the sum.- 8
+ 16
A. 23
B. 7
C. 24
D. 7
Using the Law of Cosines, find angle B if a = 28.7, b = 31.5, and c = 11.6.
a. 152.9ø b. 37.6ø c. 92.9ø d. 24.5ø e. 139.2ø