If a sequence is defined recursively by f(0)=3 and f(n+1)= -f(n)+5 for n is greater or equal to 0, then f(2) is?

"you know, playing tennis is healthier than watching a tennis match on television," katya remarked to her couch potato brother. in this sentence, healthier is a/an a. superlative. b. comparative. c. positive form. d. adverb.

Graph the system: f(x)= 3/x-2; f(x)= 1/2x + 2

Some boys and girls were asked if they had a pet. one third of the group were boys. there were 20 boys. 20% of the girls had a pet. boys with a pet : girls with a pet = 1 : 5 i need to know how many girls there are.