The temperature of a chemical reaction ranges between 30°C and 70°C. The temperature is at its lowest point when t = 0, the temperature is 90 degrees and increasing. What is a sine function that would model this reaction

Question

anonymous · Answer

possible answers:
f(x) = 20 sin 10x + 50

 f(x) = 50 sin 10x + 20

 f(x) = 50 sin pi over 5x + 20

 f(x) = 20 sin pi over 5x + 50

anonymous · Answer

y = sina(bx+c)+k

anonymous · Answer

I already know that. How do you apply it to this problem? I think the question is bad and there is missing information