The quotient of x and 10 equals 30

Abacteria population is tripling every hour. by what factor does the population change in 1/2 hour? select all that apply

Find the solution(s) to the system of equations. select all that apply y=x^2-1 y=2x-2

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