What is the solution to the following system of equations?

(8, 2) 

You can get this by using elimination. Multiply the bottom equation entirely by -5 and the x terms will cancel. You can then solve for the y value and use that to find the x. 

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