Isotope X has a half-life of 45 minutes. If you start with 853 g of the isotope, then how
many grams will you have after 700 minutes?

Can you simplify 4/7? 24 points will be awarded!

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.

Kevin's bank offered him a 4.5% interest rate for his mortgage. if he purchases 3 points, what will be his new rate?