Mark is getting ready for the baseball season. an hour of time in the batting cage costs $12. for each 5 hours he receives one free hour. if mark spent $180 at the batting cage last month, how many free hours did he receive?

1. 0.3 •4 is the same as 4 groups of 0.32. 7•0.8 is the same as 7 groups of 0.83. it increases by 0.5 every time, so 0.5x4 it increases by 0.9 every time, so 0.9x5. 0.9•12=10.86. 0.47•5=2.35i can finish the next ones in a separate post

and surely you know how much that is.

49.6 is what i think it is.