The equation gives the position s = f(t) of a body moving on a coordinate line (s in meters, t in seconds). s (m)
When is the body moving backward?
A. 8 < t ? 10
B. 2 < t < 3, 4 < t < 5, 7 < t < 8
C. 2 < t < 3, 4 < t < 5, 7 < t < 9
D. 8 < t < 9
Answer: C
Mathematics
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Use the following formula: A = Pert to find the equation for the amount of money in an account, after 15 years at 9% compounded continuously, if there was initially $350 in the account.? ?
A. ?A = 350e0.09(15) B. ?350 = Pe0.09(15) C. ?A = 3509(15) D. ??350 = Pe9(15) E. ?A = 15Pe0.09
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Graph the equation.x2 + y2 + 8x + 6y + 21 = 0
A. 
B. 
C. 
D. 
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Simplify the expression using the order of operations.3 ? [52 + 8 ? (4 + 4)]
A. 792 B. 267 C. 183 D. 79
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Multiply and simplify.
? 
A. - 
B. 
C. 
D. -12
Mathematics