Solve the problem.According to one model, an animal's heart rate varies according to its weight. The formula 
gives an estimate for the average number N of beats per minute (bpm) for an animal that weighs w pounds. Use the formula to estimate the heart rate for a giraffe that weighs 3469 pounds. Round your answer to the nearest whole number.
A. 885 bpm
B. 52,125 bpm
C. 15 bpm
D. 944 bpm
Answer: C
Mathematics
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Solve the inequality.For the function f(x) = x2 + 10x + 21, solve f(x) > 0.
A. (-3, ?) B. (-?, -7) C. (-7, -3) D. (-?, -7) ? (-3, ?)
Mathematics
Verify the identity.
- 
= cos x - sin x
What will be an ideal response?
Mathematics
Find the indicated composite for the pair of functions.Given f(x) = -2x + 5 and g(x) = 4x + 9, find (g ? f)(x).
A. -8x + 29 B. 8x + 29 C. -8x + 23 D. -8x - 11
Mathematics
Use the Factor Theorem to determine whether x - c is a factor of f(x).f(x) = 6x4 + 23x3 - 4x2 + x - 4; x + 4
A. Yes B. No
Mathematics