Question

The temperature of a chemical reaction ranges between 30 degrees Celsius and 70 degrees Celsius. The temperature is at its lowest point when t = 0, and the reaction completes 1 cycle during a 10-hour period. What is a cosine function that models this reaction?

A. f(t)= 20 cos 10t+50
B. f(t)= 50 cos 10t+50
C. f(t)= -50 cos pi/5t + 20
D. f(t)= =20 cos pi/5t + 50

Answer 1

hi

Answer 2

answer is a @Lidayuh