what is the inverse of the function " f(x) = 2x+12 / 5
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Answer:
B. f-1(x) = (5/2) x - 6.
Step-by-step explanation:
f(x) = (2x + 12) / 5
5 f(x) = 2x + 12
2x = 5 f(x) - 12
x = (5 f(x) - 12) / 2 ow replace the x by f-1(x) and f(x) by x:
f-1(x) = ( 5x - 12)/ 2
f-1(x) = (5/2) x - 6.