Which expression has a positive value? a. –(10÷2) b. –10÷(–2) c. (–10) ÷ 2 d. 10÷(–2)

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?

Find dy/dx using implicit differentiation ln(20+e^xy)=y

Which of the following quartic functions has x = –1 and x = –2 as its only two real zeroes?