5y = 4x + 20
- 4x + 5y = 20
The answer to your question is 6.54
This is the answer with the correct work.
f(x) = (3x+5)/7
Step 1:
we write f(x) as y
y=(3x+5)/7
Step 2:
switch y by x and x by y
x=(3y+5)/7
Step 3:
solve for y,
x=(3y+5)/7
multiply both sides by 7
7x=3y+5
subtract 5 from left side
3y=7x-5
divide both sides by 3
y= (7x-5)/3
f⁻¹ (x) =(7x-5)/3
Answer:
6
Step-by-step explanation:
You started with 18 and you multiply 6×2 and you get 12 able your answer is 6 I believe. sorry if I'm wrong
