HELP PLEASE THIS IS IMPORTANT!! (please show work too) Which expression is equivalent to 2x2−18?

A. (2x−3)2
B. 2(x−3)2
C. (x+9)(x−9)
D. 2(x+3)(x−3)

Is there a picture of a graph or whatever that goes along with this?

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