The population of snails in a tank aquarium is found triple every year. mark visits the aquarium and counts 80 snails in the tank. write a function f(n) to model the number of snails after n years after marks visit.

What is the perimeter, p, of a rectangle that has a length of x + 8 and a width of y − 1? p = 2x + 2y + 18 p = 2x + 2y + 14 p = x + y − 9 p = x + y + 7

Tod does not have any cookies. david gives jeff 8 cookies. then he splits half of the cookies he has left with tod. david let’s c represent the number of cookies that he starts with. he finds the number of cookies that tod has is 1/2 the difference of c and 8. write an expression to represent the number of cookies that tod has.

You earn a 12% commission for every car you sell. how much is your commission if you sell a $23,000 car?