Jose is looking for a new set of school supplies to buy. Jose remembers that the notebook he bought was $10, but he was in a hurry and did not check the cost
for the 4 highlighters he bought. The total for the highlighters and notebook was
$15.20, how much were each of the highlighters? Write the equation that would
be used to solve this problem, use h for highlighters. There are not sales taxes in
this problem.*

Need help asap

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.)

What percent of 18 is 24? and plz explain thx.

Express -5 2/5 as an improper fraction.