Evaluate f(a-5) given f(x)=x to the 2nd power + 8

If a || b and b | y, then ? a) x || y. b) x | a. c) a | y. d) a || y.

Kai walked one and two-thirds of a mile on saturday and four and one-sixth of a mile on sunday. how many miles did kai walk?

Acircus act has 3 times as many elephants as acrobats. jorge noticed that all together there were 56 legs in the circus ring. how many elephants were in the show?