What shape is this ??? Please help me.

This is a rational expression because the denominator contains a variable. this is a polynomial with 3 terms. this is a rational expression because the denominator contains a variable. this is a polynomial with 4 terms. this is a rational expression because the denominator contains a variable. this is a polynomial with 4 terms. this is a rational expression because the denominator contains a variable. this is a polynomial with 3 terms. this is a rational expression because the denominator contains a variable. this is a polynomial with 5 terms.

Given δjkl : δxyz, find x. a)10 b)12 c)16 d)20

Cody ran nine miles on his first day of training. the next day he ran 1/8 that distance. how far did he run the second day?