Plz if your seeing this help me asap what’s the answer ?

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

$22. if larry's profit were to minimize by one for every hour his store were to be closed, we would subtract 30 by 8.

The answer should be 5.