Katherine and Christine work at the same restaurant. Each week, Katherine works 5 more hours than Christine. Katherine earns $7.00 per hour and Christine earns $8.00 per hour.
4.
a) Write a simplified expression to represent the total number of hours Katherine and Christine work in one week.
2]
b) Write a simplified expression to represent the total amount they earn in one week.
2]
c) Suppose Christine worked 9 hours last week. What was the total amount the girls earned last week?