unknown1174 unknown1174

13-01-2021
Advanced Placement (AP)

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If f (a) = 2² +2, then which of the following is the value of f(-3)?

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young12250 young12250

13-01-2021

Explanation:
Using the defined function, f(a) will produce the same result when substituted for x:

f(a) = a2 – 5

Setting this equal to 4, you can solve for a:

a2 – 5 = 4

a2 = 9

a = –3 or 3

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