Answer:
40 + x = y
Just use the variables given to make an equation.
If he gets 20% commission and he sold $2580, multiply 2580 * .2 to get what he made
2580*.2 = $516
Plugging in (2,-7) into
y=-5x+b, we get that b=3.
Therefore, the equation is y=-5x+3
She has 67% of the pencils.
Chester:Mary = 2:4 = 1:2
So, in the simplest case:
If Chester has one pencil Mary would have two.
There are three pencils.
Mary has two.
2/3 = 0.667 = 67% (rounded)
