You have in your cash register a 10 dollar bill, 3 five dollar bills, 8 one dollar bills, and 12 quarters, 5 dimes and 10 nickels. how much do you need to deposit in the safe to have only $30 in the cash register ?

First, see how much money you have:

10 + 3(5) + 8(1) + 12(0.25) + 5(0.1) + 10(0.05) =

10 + 15 + 8 + 3 + 0.5 + 0.5 =

37

You need to deposit $7 into the safe, since 37 - 7 = 30.

HI THERE!

so if you add the money up together you have 37 dollars, your goal is to have 30 in the bank right? so if you deposit 7 in the bank then you would have 30 we know this because of 37-7=30 :) 

-have a good day 

Correct sir/miss have a good day x < 3