Answer:
9x-2
Step-by-step explanation:
f^-1(x)=1/f(x)=9x-2
-2 and 5 (just put in a graphing calculator and find the zeros)
1 gallon = 16 cups
1 hour = 60 min
16 cups = 60 min
5 gallons =180 min/ 3 hrs
1 cup = 3.75 minutes
The correct answer is <span>R(x) = 9,000[9(1.035)x + 7(1.021)x]; $170,936</span>
