Find the period P and amplitude A and graph at least two periods of the equation.
A. P = 90.0°, A = 2.5
B. P = 900°, A = 4
C. P = 144°, A = 4
D. P = 900°, A = 4
E. P = 144°, A = 4
Answer: E
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Divide numerator and denominator by the highest power of x in the denominator to find the limit.
A. ?
B. 
C. 
D. 0
Determine if the given value is a solution to the equation.3(x - 1) - x = 4x + 4; x = -3
A. No B. Yes
Solve the problem.When you buy an item on which sales tax is charged, the total cost is calculated by the formula: 
where T is the total cost, P is the item's price, and S is the sales tax rate (as a percent). If you pay $14.77 for an item priced at $14, what was the tax rate?
A. 6.5% B. 5.5% C. 2.75% D. 7.5%
Determine the number of solutions of the system. State whether the system is consistent or inconsistent. For a system that is consistent, state whether the equations are dependent or independent. State the solution of the system.
A. one solution; consistent; independent; (0, 2)
B. one solution; consistent; independent; 
C. infinitely many solutions; consistent; dependent
D. no solution; inconsistent