Solve by elimination
2x - 5y = 16
3x + 5y = -1

F(n + 1) = f(n) – 8. if f(1) = 100, what is f(6)?

Explain why the factor 1.5 is broke. into two numbers in the model.

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