Consider the given functions,

Solve for f(2) as,

Thus, the value of f(2) is equal to 1 .
Solve for inverse of f(1) as,

Thus, the value of f(2) is equal to 1 .
Set up an equation for both Sarah and Joe.
Sarah's equation would be 59+19.50x=y
Joe's Equation would be 149+9.50x=y
The goal is to get y to equal the lowest number. If we plug in 1 for x for both equations we get:
59+19.50(1)=y for sarah and Joes would be 149+9.50(1)=y.
Sarah would pay $78.50 for her 1st month and Joe would pay $158.5 for his 1st month. Sarah pays much less than joe but over a few months Sarah would pay more eventually. Hope I helped and if you have any questions, just leave a comment.
Answer:
x = 9.
Step-by-step explanation:
42 - 15 = 27
27 ÷ 3 = 9
She farts at least 20 juuls
For the problem are you supposed to be solving for x