$8.25
The first 5 checks are free so you can subtract the 5 from 18 which is 13. Then you multiply 13 & .25 which is equal to $3.25 and then you just add the $5
The answer is D. Because you need to add not subtract.
Decimals are easier to be put into if the denominator is 100.
If we half the numerator and denominator we get 38.5/100
if 1=0.01
38.5 = 0.385
hope that helps! :)