List the first n terms of the geometric sequence satisfying the given conditions.a1 = 7, r = 2, n = 4

A. 7, 14, 28, 112
B. 7, 14, 28, 56
C. 2, 14, 98, 686
D. 7, 9, 11, 13


Answer: B

Mathematics

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Simplify.(-23 - 18)(-19 - 11)

A. 1230 B. -40 C. 40 D. -1230

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Express as a single logarithm and, if possible, simplify. log(t3 + 729) - log(t + 9)

A. log(t2 + 9t + 81)
B. log(t2 - 9t + 81)
C.
D. log(t3 - t + 729)

Mathematics

Solve the problem.Find the area A and circumference C of a circle of radius 9 yd. Express the answer in terms of ?.

A. A = 324? yd2; C = 9? yd  B. A = 18? yd2; C = 18? yd  C. A = 36? yd2; C = 9? yd D. A = 81? yd2; C = 18? yd

Mathematics

Multiply. Simplify and leave the numerator and denominator in your answer in factored form. ? 

A.
B.
C.
D.

Mathematics