When full, the gas tank of a car holds 15 gallons. it now contains 12 gallons. what percent represents how full the tank is

Which formula gives the area of a triangle? a=1/2(b+h)

Two variables, x and y, vary inversely, and x=12 when y=4. what is the value of y when x=3?

Neoli is a nurse who works each day from 8: 00 am to 4: 00 pm at the blood collection centre. she takes 45 minutes for her lunch break. on average, it takes neoli 15 minutes to collect each sample and record the patient's details. on average, how many patients can neoli see each day?