Simplify 17d - 5e + 3e - 15d.

a.) 0
b.) 2d + 8e
c.) 2d - 2e
d.) 32d + 8e

17d - 5e + 3e -15d = 2d -2e

The answer is C

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