Why is 15+1/2n an algebraic expression?

What are the vertical asymptotes of the function f(x) =5x+5/x2 + x-2

F(n + 1) = f(n) – 8. if f(1) = 100, what is f(6)?

Compare the following pair of numbers a and b in three ways. a. find the ratio of a to b. b. find the ratio of b to a. c. complete the sentence: a is percent of b. a=120 and b=340 a. the ratio of a to b is . b. the ratio of b to a is . c. a is nothing percent of b.