What is the best estimate for 38?
5.75
6.25
7.5
8.1

Element x decays radioactively with a half life of 8 minutes. if there are 450 grams of element x, how long, to the nearest tenth of a minute, would it take the element to decay to 37 grams?

Asalesperson earns $320 per week plus 8% of her weekly sales. the expression representing her earnings is 320 + 0.08x. which of the following describes the sales necessary for the salesperson to earn at least $1000 in the one week?

You work in a hospital that has 9 floors. you need to see 3 patients on each floor. how many patients do you need to see in all?