Can you tell me by how many dollars has the price risen
Direct variation means y=kx (inverse variation is yx=k or y=k/x)
so we are given that:
75=k/2, so k=150 which means:
y=150x now
y(2.25)=150(2.25)=337.5
Do you need to show work?
The Great common factor is 3.
So divide both numerator and denominator by 3 and you have -5.2.
