Factor. Assume that variables used as exponents represent positive integers.25x2n - 80xn + 64
A. (5xn - 8)(5xn + 8)
B. (5xn + 8)2
C. (25xn + 1)(xn + 64)
D. (5xn - 8)2
Answer: D
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Perform the indicated operation. Simplify the result if possible.2 ft 10 in. + 14 ft 6 in.
A. 16 ft 4 in. B. 17 ft 4 in. C. 16 ft 6 in. D. 17 ft 6 in.
Solve the following system by any appropriate method. If there is no real number solution, so state.3x2 - y2 = 14x2 + 2y2 = 14
A. (
, 4), (
, -4), (-
, 4), (-
, -4)
B. (
, 2), (
, -2), (-
, 2), (-
, -2)
C. (
, 2), (
, -2), (-
, 2), (-
, -2)
D. no real solution
Find the following. Assume that letters can represent any real number.
A. Not a real number
B. 4
C. 2x
D. 2
Solve the problem. Round your answer to the nearest cent.Brad invests $8900 in an account paying 10% compounded monthly. How much is in the account after 13 months?
A. $9868.07 B. $9913.88 C. $30,725.21 D. $8980.38