The club plans to wash cars to raise money for a new scope With tax the scope is 327.19 Estimate how many cars will have to be washed to cover entire cost of the scope if the club charges 5.00 per ca?

If I understand correctly, sounds like a simple division problem:

$327.19 (total cost of scope) / $5.00 (raised per car) = 65.438 cars need to be washed

Rounded up to the nearest whole car, the answer would be = 66 cars.