His college Jason can take a maximum of 21 hours each semester between elective classes and core classes each elective class cost $225 per semester hour and each core class costs $275 per semester hour. If he cannot spend more than $6,000 each semester on classes which system of any qualities below can be used is a Herman the number of elective classes e and the number of core classes c he can take each semester?

Joel wants to buy a new tablet computer fram a store having a 20% off sale on all tablets. the tablet he wants has an original cost of $190. he also wants to make sure he has enough money to pay the 5% sales tax. part one joel uses the incorect expression 0.95(190)(0.8) to calculate that the tablet will cost him a total of $144.40. describe his error and write the correct expression part two how much will joel pay for the tablet show your work if you answer this question correctly you will receive a prize of 99 points good luck