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Laabri

Evaluating Function Rules

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Last updated over 5 years ago
12 Nsɛmmisa
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1.

For h(x) = 2(3)x, find h(2).

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2.

For g(x) = x2 - 2x, find g(3) + 4

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3.

For f(x) = 3x + 7 and h(x) = 2(3)x, find f(2/3) - h(3).

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4.

For g(x) = x2 - 2x and f(x) = 3x + 7, find g(-4) + f(-5).

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5.

For f(x) = 3x + 7, find 2f(7) - 3.

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6.

For f(x) = 3x + 7 and g(x) = x2 - 2x, find g(6) + 5f(1).

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7.

For f(x) = 3x + 7 and g(x) = x2 - 2x, find f(g(0)).

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8.

For g(x) = x2 - 2x and h(x) = 2(3)x, find g(h(4)).

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9.

For f(x) = 3x + 7, find f(2m - 5).

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10.

Martin earns $7.50 per hour proofreading ads at a local newspaper. His weekly wage w can be described by the equation w(h) = 7.5h, where h is the number of hours worked. Find and interpret w(20).

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11.

The function C(r) = 500 + 175r models the cost of installing carpet in a house where r is the number of rooms in the house and C is the total cost. Evaluate C(5) and explain the meaning.

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12.

The function H(t) = -16t2 + 40t + 50 models the height H in feet of a ping pong ball as it is thrown upwards in t seconds. What is the height after 3 seconds.