Water is draining from a pond.  The amount of water, in gallons, remaining in the pond t minutes after draining begins is given by the function . We know that  and

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?

A. 2,309 gallons
B. 1,160 gallons
C. 4,634 gallons
D. None of the above

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Answer: B

Mathematics

Find the area of the specified region.Inside one leaf of the four-leaved rose r = 5 sin 2?

A.  - 
B.
C.
D.

Solve triangle ABC. Round side lengths and angle measures to the nearest tenth when necessary.a = 20, b = 33, c = 44

A. A ? 25.3°, B ? 22.5°, C ? 132.2° B. A ? 44.9°, B ? 25.3°, C ? 109.8° C. No triangle exists. D. A ? 25.3°, B ? 44.9°, C ? 109.8°

Simplify the expression by combining like terms if possible.7x2 - 5 + 5x2 + 4

A. 11 B. 11x2 C. 12x2 - 1 D. 2x2 - 1

Factor as completely as possible. If unfactorable, indicate that the polynomial is prime.4x2 + 81

A. (2x + 9)2 B. (2x - 9)2 C. Prime D. (2x + 9)(2x - 9)