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.? ?

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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

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