PLEASE HELP
ASAP, type in answer, its really important

One of the inventors of integrated circuits observed that the number of transistors that fit on an integrated circuit will double every 24 months. what type of relationship most appropriately models this situation?

Gabrielle's age is two times mikhail's age. the sum of their ages is 84. what is mikhail's age?

When steve woke up. his temperature was 102 degrees f. two hours later it was 3 degrees lower. what was his temperature then?