Suppose a friend tells you she paid a total of $8,540 for a motorcycle, and you’d like to know the motorcycle’s list price (the price before taxes) so that you can compare prices at various dealers Find the list price, p, of the motorcycle if your friend bought the motorcycle in:

a) Washington, where the sales tax is 6.5%.

b) Idaho, where the sales tax is 6.0%.

c) A state where the sales tax is r. Assume r is in decimal format.

d) Solve for r in your answer to (c) above