 • Slides: 9  Previous answer 20 (units) Solve this problem then find the solution at the top of another paper. You gave a waiter \$20. 00 for your lunch that cost \$16. 25. You tell the waiter to keep the change as a tip. What percent of a tip did you give the waiter?  Previous answer 33 (units) Solve this problem then find the solution at the top of another paper. Game Stop sells 3 used games for \$19. 50, 7 used games for \$45. 50, and 12 used games for \$78. 00. let y equal the total cost and x equal the number of used games. Write an equation to represent the situation. Previous answer Y = 6. 5 x Solve this problem then find the solution at the top of another paper. Coach Miller estimates that 500 people attended the homecoming game. After counting the tickets, he finds that 552 people attended. What was the percent error in coach Miller’s estimate? Previous answer 10. 4 (units) Solve this problem then find the solution at the top of another paper. At a new job you start at \$8. 00 per hour. After 90 days you get an increase to \$9. 00 per hour. What is the percent increase in this hourly rate?   