__________ percent of all out-of-wedlock births were to cohabitating parents. Select one: a. 40 b. 50 c. 60 d. 80
1 answer:
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Given:
The function is .
To find:
The function .
Solution:
We have,
Substitute f(x)=y.
Interchange x and y.
Divide both sides by 3.
Taking power 4 on both sides.
Subtract 7 from both sides.
Substitute .
Therefore, the correct option is C.