Please help and answer fast

Write the expression 7x^3-28xy^2 as the product of 3 factors

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?

Combine like terms to make a simpler expression 3z+z