Anne runs 6 laps on a track. she runs a total of 1 mile, or 5,280 feet. write and solve an equation to find the distance, in feet, that she runs in each lap.

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