if 12 g of a radioactive substance are present initally and 8 yr layer only 6 g remain, how much of the substance will be present after 17 yr

168

step-by-step explanation:

first off, we know that he drove 3.5 hours at a rate of 48 mph.

knowing that, we want to see how many miles he drove all-together.

in this case, we can just multiply 48 by 3.5.

48 * 3.5 = 168

y-3=-3/2(x+4)

ur very much welcome

yeah i know the problem you need. i am taking it right now. the answer is step 3

~mickey