The temperature of chemical reaction ranges between 40 degrees Celsius and 180 degree Celsius the temperature is at its lowest point when t=0 and the reaction completed 1 cycle during a 12 hour period what is a cosine function that models this reaction A. F(t)=70cos(12t)+110
B. F(t)=110cos (12t)+70
C. F(t)=-70 cos (pi/6 t) +110
D. F(t) = -110 cos (pi/6 t) + 70

Oscar and julie ashton are celebrating their 15th anniversary by having a reception hall. they have budgeted $4,500 for their reception. if the reception hall charges a $90 cleanup fee plus & 36 per person, find the greatest number of people that they may invite and still stay within their budget.

Isuck at math ; ^; m a student solved this problem and said the answer is 3 feet. chase had a roll of ribbon that contained 7 7/8  feet of ribbon. he cut off one piece that was 3 5/8  feet long and another piece that was 1 1/4  feet from the roll. how much ribbon was left on the roll? is the student's answer reasonable? yes, the answer is reasonable. no, the answer is not reasonable. it should be about 2 feet. no, the answer is not reasonable. it should be about 13 feet. no, the answer is not reasonable. it should be about 4 feet.

Which of the following would be a good name for the function that takes the weight of a box and returns the energy needed to lift it?