A new gaming system at Gamestop is sold for $500.00. It costs the manufacturer of the system $490 to make it. Use this information to help solve 1a, 1b, and 1c. 1a. Write and solve an equation to determine what the percent markup is.

1b. Upon purchasing the unit you will also need to pay 7.5% sales tax, write and solve an equation to determine what the final purchase price will be.
1c. Gamestop is providing their employees with a bonus of 13% commission for everything they sell this weekend. Write and solve an equation to determine what the final purchase price will be.