-2x+2y=8 put this equation into slope intercept form

Explain how you do each step what term makes it inconsistent y=2x - 4 ?

Factor the polynomial by its greatest common monomial factor.

Suppose a laboratory has a 30 g sample of polonium-210. the half-life of polonium-210 is about 138 days how many half-lives of polonium-210 occur in 1104 days? how much polonium is in the sample 1104 days later? 9; 0.06 g 8; 0.12 g 8; 2,070 g