If a nurse gives a patient 1/8 gr of medicine at 3 pm and then 1/4 gr at 8 pm, how much morphine was administered to the patient?
A.3/8 gr
B.2/8 gr
C.3/6 gr
D.2/14 gr

Jenisey has $24 to spend on seven pencils. after buying them she had $10. how much did each pencil cost.?

The formula for the lateral area of a right cone is la = rs, where r is the radius of the base and s is the slant height of the cone. which are equivalent equations?

The u-drive rent-a-truck company plans to spend $13 million on 320 new vehicles. each commercial van will cost $25 comma 000, each small truck $50 comma 000, and each large truck  $80 comma 000. past experience shows that they need twice as many vans as small trucks. how many of each type of vehicle can they buy?