Factors of 180 that are under 40 = 1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36 multiples of 9 under 40 = 9, 18, 27, 36 number that is a multiple of 9, has factors 4 and 6, is a factor of 180, and is less than 40 = 36

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