Rich is attending a 4-year college. As a freshman, he was approved for a 10-
year, federal unsubsidized student loan in the amount of $7,300 at 4.29%.
He knows he has the option of beginning repayment of the loan in 4.5 years.
He also knows that during the nonpayment time, interest will accrue at
4.29%
a. How much interest will Rich accrue during the 4.5 year nonpayment
period?
b. What will be the new principal amount when Rich begins making
payments?

What is the answer to this question? i'm a bit stumped. also how do i do it? 5(x - 4) = 2(x + 5)

Adoctor administers a drug to a 38-kg patient, using a dosage formula of 50 mg/kg/day. assume that the drug is available in a 100 mg per 5 ml suspension or in 500 mg tablets. a. how many tablets should a 38-kg patient take every four hours? b. the suspension with a drop factor of 10 ggt/ml delivers the drug intravenously to the patient over a twelve-hour period. what flow rate should be used in units of ggt/hr? a. the patient should take nothing pills every four hours. (type an integer or decimal rounded to the nearest hundredth as needed.)

Which number line correctly shows 0.8 + 0.3?