Prove sin^3 cos^3x = (sin^3 - sin^5x)cos x

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?

If a baby uses 15 diapers in 2 days how many diapers will the baby use in a year

What is the solution to the equation below? 3/x-2+6=square root x-2 +8