Heather paid $2,022.30 for a computer. If the price paid includes a 7% sales tax, which of the following equations can be used to determine the price of the computer after tax?

(Let x represent the cost of the computer and y represent the total cost after tax.)
A.
y = 1.7x
B.
y = 0.93x
C.
y = x + 7x
D.
y = 1.07x