Please help. Thank you

One positive integer is 2 less than another. the product of the two integers is 24. what are the integers?

How do i simply this radical expression?

The half-life of a certain material is 0.002 second. approximately how much of a 14-gram sample will be left after 0.004 second? a. 12 grams b. 3.5 grams c. 0.06 gram d. 7 grams