Solve the problem.The graph below shows the amount of income tax that a single person must pay on his or her income when claiming the standard deduction. Identify the income levels where discontinuities occur and explain the meaning of the discontinuities. 
A. Discontinuities at x = $22,000, x = $44,000, and x = $60,000. Discontinuities represent boundaries between tax brackets.
B. Discontinuities at x = $44,000 and x = $60,000. Discontinuities represent tax shelters.
C. Discontinuities at x = $44,000 and x = $60,000. Discontinuities represent boundaries between tax brackets.
D. Discontinuities at x = $22,000, x = $44,000, and x = $60,000. Discontinuities represent tax cheating on the part of high-income earners.
Answer: A
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A. 24 cos(4x + 10) B. -24 sin(4x + 10) C. -96 sin(4x + 10) D. -96 cos(4x + 10)
Write the following as an algebraic expression in u, u > 0.sin 
A. 
B. 
C. u
D. 
Identify the numerator and the denominator of the fraction.
A. numerator: 
; denominator: 1
B. numerator: 7; denominator: 1
C. numerator: 5; denominator: 2
D. numerator: 2; denominator: 5
List the terms of the expression.2y11 - 16y2 - 3y
A. 2y11, -16y2, 3y B. 2y11, 16y2, -3y C. 2y11, -16y2, -3y D. 2, y11, -16, y2, -3, y