Which of the following will result in a negative number? A. 7 + (-5)
B. 1 + (-1)
C. (-3) + 4
D. (-3) + 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?

Adiverr from the university of florida women’s swimming and diving team is competing in the ncaa zone b championships

Sanya noticed that the temperature was falling at a steady rate of 1.4 degrees every hour from the time that she first checked her outdoor thermometer. by 6 a.m., the temperature had fallen 21 degrees. which expression can you use to find how many hours earlier she had first checked the thermometer?