1,400 I think :D Hope I helped!
First box, third box, fifth and also sixth =D
Answer:
4
Step-by-step explanation:
3x +7 = x + 15 subtract x from both sides
2x + 7 = 15 subtract 7 from both sides
2x = 8 divide both sides by 2
x =4
The inverse would be
f^-1(x) = x/5 - 2/5
