Which function has two x-intercepts, one at (0,0) and one at (4, 0)?
f(x) = x(x – 4)
f(x) = x(x + 4)
f(x) = (x - 4)(x – 4)
f(x) = (x + 4)(x + 4)

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