Simplify the expression.cos 8x cos 4x + sin 8x sin 4x
A. cos 12x
B. sin 4x
C. cos 4x
D. sin 12x
Answer: C
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Write a statement that represents the relationship between the following.A = {a, e, i, o, u} and B = {e, o, i, u, a}
A. e ? B B. A ? B C. a = A D. A = B
Use a graphing calculator to graph the equation and identify the x-intercepts. If your answers are not exact, round to the nearest tenth.y = x2 + 5.2x + 5.3
A. x-intercepts: (-3.8, 0) and (-1.4, 0)
B. x-intercept: (0, 5.3)
C. x-intercept: (0, 5.2)
D. x-intercept: (1.4, 0) and (3.8, 0)
Graph the function, showing all asymptotes (those that do not correspond to an axis) as dashed lines. List the x- and y-intercepts.f(x) = 
A. No x-intercepts, y-intercept: (0, -4) ;
B. x-intercepts: (-4, 0) and (1, 0) ,
y-intercept: (0, -4) ;
C. No x-intercepts, y-intercept: (0, -4) ;
D. No x-intercepts, y-intercept: (0, 4) ;
Solve the problem.How many different license plates can be made using 3 letters followed by 2 digits selected from the digits 0 through 9, if neither letters nor digits may be repeated?
A. 1,123,200 B. 117,000 C. 1,757,600 D. 1,404,000