Addison wants to ride her bicycle more than 80 miles over the next 6 days. If she rides the same amount of miles each day, how many miles must she bicycle each day?

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