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