Answer:
y = 1.05x + 4.45
Step-by-step explanation:
Therefore, the original price of the hat is 22.5$.
Y=2x+4
2x-y=-4
subtract 2x
-y=-2x-4
divide by -1
y=2x+4
-11, and -9 is the range for 1/2 and 0 respectively