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Sidney Hickman
Mathematics
30 April, 07:50
If f (x) = 5 х - 7, what is f3) ?
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Tramp
30 April, 08:10
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8
Step-by-step explanation:
When a number is put in the parenthesises with x you substitute that number in every time you see x.
f (x) = 5x-7
f (3) = 5 (3) - 7
f (3) = 15-7
f (3) = 8
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