Let m = the number of miles Brad can drive. Your equation becomes:
250 = 26.95(4) + 0.28m
Now we just solve for m
250 = 107.80 + 0.28m 142.20 = 0.28m
m ≈ 507.857 miles
We are looking for WHOLE miles though and if he goes even a decimal point over that many miles (and change), he will be over budget. Thus, we must round down to the whole integer.
Brad can drive 507 miles on a $250 budget for a 4-day rental.
All you would do is multiply 26.95 by 4 to find the cost of the rental for four days which is 107.8. Then you would subtract that number from the total he has to spend which would give you 142.2. The divide 142.2 by 0.28 and that gives you 507.857142. But you would round to the nearest whole number and that would give you 507 miles
