Ms. Yost has 20 boxes of markers. She buys 420% more boxes. How many boxes will she have in all? .

Another type of subtraction equation is 16-b=7. explain how you would sole this equation then solve it.

Paco orders an ice cream for $1, but realizes his wallet is at home and he only has 3/20 of $1 with him. if his mom pays the remaining 7/20 of the dollar, how much will she pay? $0.05 $0.15 $0.85 $0.95

Anumber is equal to twice a smaller number plus 3. the same number is equal to twuce the sum of the smaller number and 1. how many solutions are possible for this situation