Answer:
It's a direct variation, as the ratio between x and y is constant
Store A's prices are represented by the expression 15x - 2.
Store B's prices are represented by the expression 3(5x + 7).
To find when the 2 stores charge the same rate , we set the expression equal and solve for x
15x - 2 = 3(5x+7)
15x -2 = 15x + 21
Subtract 15x on both sides
-2 = 21
We cannot solve for x
So , the price of two stores never be same
Two stores never charge the same rate
87.3 + 15.6= 102.9
87.3 + 15.6= 102.9
87.3 + 15.6= 102.9
