Composition of Functions Answers
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21
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If s(x) = x – 7 and t(x) = 4x2 – x + 3, which expression is equivalent to ?
A
4(x – 7)2 – x – 7 + 3B
4(x – 7)2 – (x – 7) + 3C
(4x2 – x + 3) – 7D
(4x2 – x + 3)(x – 7)22
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Fifteen percent of an employee’s taxable income is collected each paycheck. Before taxes are removed from each paycheck, $350 of tax-exempt expenses is taken out. If the variable x represents the employee’s pay before tax-exempt expenses and taxes are removed, which expression represents the employee’s take-home pay after these deductions?
A
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B
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C
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D
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23
If f(x) = 3x + 2 and g(x) = x2 + 1, which expression is equivalent to ?
A
(3x + 2)(x 2 + 1)B
3x 2 + 1 + 2C
(3x + 2)2 + 1D
3(x 2 + 1) + 2Did you find these answers helpful?
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