He 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?
f(t) = 20 cos 10t + 50
f(t) = 50 cos 10t + 20
f(t) = −50 cos pi over 5 t + 20
f(t) = −20 cos pi over 5 t + 50

answer: since the question is talking about growth you have to use the growth formula which is inital amount (1 + growth)^time

step-by-step explanation:

the intial amount is 1200, the growth is 4.8, and the time is 7. plug those numbers into the equation, also i think you have to change 4.8 into a percent. but, i have forgotton how to do that. if this is a online class go on to the lesson.