?Use the Binominal Theorem to expand the complex number. Simplify your result.
?
?
A. ?
B. ?
C. ?
D. ?
E. ?
Answer: D
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Solve the problem.Let f(x) = cos x, g(x) = x - ?/6, and h(x) = 3x. Find g(?).
A. 3? B. 5?/6 C. 7?/6 D. -1
Solve the problem.A survey of the interest rates earned by Certificates of Deposit (CDs) showed the following percents for the length of time (in years) for holding the CD. Let length of time represent the independent variable and interest rate represent the dependent variable. Use a graphing utility to draw a scatter diagram and to find the line of best fit. What is the estimate of the interest rate for a CD held for 30 years (to the nearest thousandth)? 
A. 8.874 B. 8.675 C. 8.669 D. 9.064
Solve the equation on the interval [0, 2?).cos
- cos
= 1
A. 
, 
B. 
, 
C. 
, 
D. 
, 
Graph the function using its vertex, axis of symmetry, and intercepts.f(x) = -x2 + 6x 
A. vertex (3, -9)
intercept (0, -18)
B. vertex (3, 9)
intercepts (0, 0), (6, 0)
C. vertex (-3, 9)
intercepts (0, 0), (- 6, 0)
D. vertex (-3, -9)
intercept (0, -18)