Answer:
2
Step-by-step explanation:
3x5 is 15 and 4x5 is 20
7x - 12 = 3x - 2
f(3) = -11
f(3) means you sub the value that is inside into x
f(3) = -3(3) - 2
= -9 - 2
= -11
$4.95
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