Simplify the given expression. Expansion of any term is not necessary; proper recognition of the form of the expression leads to the proper result.sin 8x cos 8x

A. 2 sin 4x
B. cos 4x
C. cos 8x
D.  sin 16x


Answer: D

Mathematics

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Graph the solution set of the system of inequalities.

A.

B.

C.

D.

Mathematics

Use I = Prt for simple interest to find the indicated quantity.P = $13,500; t = 4 months; I = $517.50. Find r.

A. 11.7% B. 7.7% C. 3.8% D. 11.5%

Mathematics

Find the x- and y-intercepts for the equation. Then graph the equation.y = 4

A. (none), (4, 0)

B. (0, 4), (none)

Mathematics

Solve. Remember to insert units when writing your answer.A bag of popcorn weighs 201 grams. If each bag contains 6 servings, find the weight of 

A. 44.5 g B. 43.5 g C. 33.5 g D. 1,206 g

Mathematics