Solve the problem.The voltage E in an electrical circuit is given by E = 3.6 cos 90?t, where t is time measured in seconds. Find the amplitude.
A. 90?
B. 3.6
C. 7.2
D. 90
Answer: B
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Solve the problem.Penrose tiles are formed from a rhombus WXYZ with sides of length 1 and interior angles 72° and 108°. (Refer to the illustration.) A point O is chosen on the diagonal 1 unit from Y. Line segments OX and OZ are drawn to the other vertices. The two resulting tiles are called a kite (figure OXYZ) and a dart (figure OXWZ). Find the area of the kite tile and the dart tile, correct to the nearest 0.01. 
What will be an ideal response?
Solve the equation.5x(x - 2) = (4x - 7)(x - 2)
A. {-2, 7} B. {7} C. {-7} D. {2, -7}
Find the x-intercepts (if any) for the graph of the quadratic function.f(x) = x2 - 4
A. (-4, 0) B. (-2, 0) and (2, 0) C. (2, 0) D. No x-intercepts
Identify the leading term and leading coefficient of the polynomial.-3x2 + 2x3 + 3x4 + 2
A. 3x4, 3 B. 2x3, 2 C. -3x2, -3 D. -3x2, 3