Simplify the exponential expression.(x9)7
A. x63
B. 7x63
C. x16
D. 7x9
Answer: A
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Find the domain of the composite function (g ? f)(x). Write the domain in interval notation.f(x) = 
, g(x) = 7x + 3
A. [0, ?) B. (-?, 0] C. (-?, 7) ? (7, ?) D. (-?, ?)
Solve the problem.Determine the period and frequency of oscillation when a pendulum of length 11 feet is released after being displaced 2 radians.
A. Period = 2?
sec, frequency = 
cycles per sec
B. Period = 2?
sec, frequency = 
cycles per sec
C. Period = 11? sec, frequency = 
cycles per sec
D. Period = 
sec, frequency = 
cycles per sec
Find the area of the triangle having the indicated angle and sides. ? B = 123°, a = 64, c = 28 ? (Round your answer to one decimal place.) ?
A. 750.4 B. 753.4 C. 1,502.9 D. 752.4 E. 751.4
Find the difference. Simplify the result.
- 
A. 
B. 
C. 
D. 