Find the indicated sum. Find the sum of the first 7 terms in the geometric series 3 + 9 + 27 + . . .

A. 3279
B. 1092
C. 9840
D. 1122


Answer: A

Mathematics

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Use the product-to-sum or sum-to-product identities to find an identity for the given expression.sin 13? - sin 7?

A. 2 cos 10? sin 3?
B. cos 10? sin 3?
C. -2 cos 10? cos 3?
D. -2 cos 5? sin ?

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Graph the system of inequalities.y ? -x2 - 6x - 4y ? x2 + 6x + 4

A.

B.

C.

D.

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Solve.A certain drug comes in 1500-mg pills. How many of these pills do you have to take to get a dosage of half a gram?

A. 4 pills
B.  pill
C.  pill
D. 3 pills

Mathematics