A patient is prescribed 70mg of a drug, and the drug only comes in 20mg tablets. The patient should be given how many tablets? A patient is prescribed 70mg of a drug, and the drug only comes in 20mg tablets. The patient should be given how many tablets?

3
3.5
4
4.5

The answer for #3 is c but i don't know why

The first element on the periodic table of elements is carbon. a. true b. false

Which of the following statements is true? a. elements in the last period are radioactive. b. atomic weight is the same as atomic mass. c. elements in the same group have the same number of electron shells. d. atomic number equals the number of neutrons in the nucleus of an atom.