What is the sign of -8+8

Chanelle deposits $7,500 into the bank. she does not withdraw or deposit money for 6 years. she earns 6% interest during that time. what will the balance be when she is finally able to withdraw her money?

Apple pie is removed from 350 degree oven. temperature of the pie t minutes after being removed id given by the function t(t)=72+268e-0.068t

What are the possible rational zeros of [tex]f(x) = x^4+2x^3-3x^2-4x+18[/tex]