Sam cut a pie into equal slices . there are only 3 slices left. the angle measure for the 3 slices is 72 ° how many slices did sam cut the pie into

I believe he cut them into 15 slices.

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