What’s the z value of this equation?
.5 inch / 50 miles = 5 inches / x miles
x = 500 miles
Final value = Initial value × (mutiplier)^n
We have;
Initial value = 9300
Multiplier = 100%+3.2% = 103.2% = 1.032
Number of quarters in a year = 4
Substitute all values into the formula, we have

rounded to two dp