Melissa’s birthday is next week and she has been receiving cards in the mail with different amounts of money. she has received 5 cards with the following amounts: $10, $20, $ 25, $30, $40. if melissa receives one more card in the mail with $25, which of the following will happen?

the mean will:

a. increase

b. decrease

c. stay the same

Out of the 150 students at a summer camp, 72 signed up for canoeing. there were 23 students who signed up for trekking, and 13 of those students also signed up for canoeing. use a two-way table to organize the information and answer the following question: approximately what percentage of students signed up for neither canoeing nor trekking?