5. CONSIDER THE FOLLOWING RELATION. THE SET OF INPUTS IS A GIVEN HIGHSCHOOL CLASS OF ALGEBRA STUDENTS. THE CORRESPONDENCE IS THE FINAL COURSE AVERAGE (ROUNDED OFF TO THE NEAREST WHOLE NUMBER) FOR EACH STUDENT. (THE SET OF OUTPUTS IS A SUBSET OF THE NON-NEGATIVE INTEGERS.) i) Is the relation also a function? Yes or No?
ii) Explain your decision.

Officer brimberry wrote 24 tickets for traffic violations last week, but only 9 tickets this week. what is the percent decrease? give your answer to the nearest tenth of a percent.

Ariana starts with 100 milligrams of a radioactive substance. the amount of the substance decreases by 20% each week for a number of weeks, w. the expression 100(1−0.2)w finds the amount of radioactive substance remaining after w weeks. which statement about this expression is true? a) it is the difference between the initial amount and the percent decrease. b) it is the difference between the initial amount and the decay factor after w weeks. c) it is the initial amount raised to the decay factor after w weeks. d) it is the product of the initial amount and the decay factor after w weeks.

An 18% discount on a watch saved a shopper $72. find the price of the watch before the discount