SOLUTION: Can someone help me step by step with this problem. The directions are Find a formula for the inverse of the function described below. A size 3 dress in Country C is size 37 in C

Algebra ->  Exponential-and-logarithmic-functions -> SOLUTION: Can someone help me step by step with this problem. The directions are Find a formula for the inverse of the function described below. A size 3 dress in Country C is size 37 in C      Log On


   

Question 1006069: Can someone help me step by step with this problem. The directions are Find a formula for the inverse of the function described below.
A size 3 dress in Country C is size 37 in Country D. A function that converts dress sizes in Country C to those in Country D is f(x)=x+34. So find a formula for the inverse of the function f(x)=x+34.
Answer by josgarithmetic(39617) About Me  (Show Source):
You can put this solution on YOUR website!
C and D functions for each county. D(x)=x+34 converts size x from county to the value in county D. You want D(x) and C(x) to be inverses.

D%28C%28x%29%29=C%28x%29%2B34=x-----be sure this makes sense before continuing.


highlight%28C%28x%29=x-34%29


Check if this works.
Size 3 in county C is what in county D?
3%2B34=37.
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Size 37 in county D is what in county C?
37-34=3.
Check is good.