Which expression is a polynomial?

y-5-7
8z-2
6y2+4
14*-2

i think is g(1)=-1.

hope that i can

45

step-by-step explanation:

to find a percentage, add a decimal in front and multiply it by the other number.

.25 times 180= 45

6/20

step-by-step explanation:

they r 125, and 216

so the sequence goes 1,8,27,64,125,216