7 1/8 × 5 2/3

O 35 1/12
O 40 3/8
O 35 3/8

What is 20+(5 x 2/5 )+ 3 show your work

Apatient is to take 60 mg of an antibiotic on day 1, take 45mg on days 2 and 3, take 30mg on days 4 and 5 and take 15 mg on days 6 and 7. how many total mg will the patient take?

Ammonia molecules have three hydrogen atoms and one nitrogen atom.how many of each atom arein five molecules of ammonia