I think it might be f^-1 (x) = x/2 - 3/2
I hope this helps!
I think
J,BB,S
(I shortened name to letter)
Answer:
Step-by-step explanation:
Lets say each ride is r
2.00r + 5.00 = 19.00
Answer:
1.25 gallons of alcohol
Step-by-step explanation:
Let x represent the amount of alcohol to add to the mix. Then the total amount of alcohol in the mix is ...
0.15×20 + x = 0.20×(20 +x)
3 +x = 4 + 0.2x . . . . simplify
0.8x = 1 . . . . . . . . . . add -3-0.2x
x = 1/0.8 = 1.25 . . . . divide by 0.8
1.25 gallons of alcohol should be added to make 21.25 gallons of 20% alcohol.
