Contemporary Mathematics for Business and Consumers 7th Edition by Robert Brechner ,George Bergeman

تمرين 10

Elwood Smith attends a college that charges $1,400 tuition per semester for 12 credit hours of classes. If tuition is raised by 9% next year:
a. How much more will he pay for two semesters of classes with the same course load?
b. If Elwood works at a car wash earning $8 per hour and pays 15% in taxes, how many extra hours must he work to make up for the tuition increase? Round to the nearest whole hour.