Solve the problem.Let f(x) =- x2 + 4x. Find all values x for which f(x) = -21.

A. -7, 3
B.
C. 7, -3
D. 4, 0


Answer: C

Mathematics

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Find the sum.4k

A. -5461 B. 5459 C. 3261 D. -3277

Mathematics

Solve the problem. Round to the nearest hundredth, if necessary.The volumes of soda in quart soda bottles are normally distributed with a mean of 32.1 oz and a standard deviation of 1.1 oz. Find the percentage of bottles with a volume of less than 32 oz.

A. 3.59% B. 50% C. 53.59% D. 46.41%

Mathematics

Using the appropriate right triangle, find the exact value of the trigonometric expression.sec 45°

A. 1
B.
C.
D.

Mathematics

Find the function value indicated for the function. If necessary, round to two decimal places. If the function value is not a real number and does not exist, state so.Evaluate t(x) =   for t(42)

A. 6.48t B. 4.03 C. 6 D. not a real number

Mathematics