Mia found a receipt for a pair of boots for $138.98, tax included. If the sales tax rate was 7%, what was the list price of the boots? Round your answer to the nearest cent.
Let x be the list price of the boots.
The total cost including tax can be expressed as:
x + 0.07x = 138.98
1.07x = 138.98
x = 138.98 / 1.07
x = $129.95
Therefore, the list price of the boots was $129.95.