Answer: D. contradicted the claims of supply-side economists and the Laffer Curve
Step-by-step explanation: In 1993 the federal government boosted income tax rates. The change in tax revenue that occurred in the seven years that followed: contradicted the claims of supply-side economists and the Laffer Curve.
y= 1.25x+6.75
Make 31.75 y because that is the total cost he paid.
1.25x+6.75=31.75
1.25x=25
x=20
So he had 20 refills.
The answer is B because I did the math
Y- y1 = m (x-x1)
y+1 = 4(x+3)
y+1=4x+12
y=4x+11