Use the formula for the sum of the first n terms of a geometric sequence to solve.Find the sum of the first five terms of the geometric sequence: 
, 
, 
, . . . .
A. 
B. 
C. 
D. 
Answer: D
Mathematics
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Perform the indicated computations. Write the answer in scientific notation.(5 × 108)2
A. 2.5 × 1011 B. 2.5 × 1017 C. 1 × 1017 D. 1 × 1011
Mathematics
Calculate the flux of the field F across the closed plane curve C.F = (x+y)i + xyj; the curve C is the closed counterclockwise path around the rectangle with vertices at 
and 
A. 9 B. 12 C. 39 D. 45
Mathematics
Find the product.(n + 7)2
A. 49n2 + 14n + 49 B. n + 49 C. n2 + 14n + 49 D. n2 + 49
Mathematics
Write the answer to the problem as an algebraic expression.Elizabeth earned 17 dollars a day at her job. Assuming a 5-day work week, how much did she earn in s weeks?
A. (85 + s) dollars B. 85s dollars C. (17 + s) dollars D. 17s dollars
Mathematics