When a rock first formed, it contained 48 milligrams of potassium-40. How much potassium-40 would remain after three half-lives?

Ricky takes out a $31,800 student loan to pay his expenses while he is in college. after graduation, he will begin making payments of $190.66 per month for the next 30 years to pay off the loan. how much more will ricky end up paying for the loan than the original value of $31,800? ricky will end up paying $ more than he borrowed to pay off the loan.

8. kelly wants to buy a magazine that is $25. later the magazine was marked up an additional 20%. what is the new price?

Plot a point at the y-intercept of the following function on the provided graph. 3y=-5x+7 20 points