I hope this helps you
y=f (x)=x-7
y=x-7
x=y+7
f^-1 (x)=x+7
The solution is this :) Hope you understand my handwriting
Answer:
r=3
Step-by-step explanation:
First we add 2 to both sides.
That leaves us with 10r=30
Then we can divide both sides by 10
r=3
x+y=12000
y=12000-x
(x)(.0615)+y(.06)=12736
x(.0615)+(12000-x)(.06)=12736
Let me know if you need more help. This is a system of equations problem I believe.
I think the answer is 128. Hope it helps!
