The growth factor:
⇒ is the base in the exponent:
⇒ the larger it is ⇒ the greater the growth factor is!
Let's Analyze our choices:
- c(t)'s growth factor: 5/2
- a(t)'s growth factor: 5/6
- d(t)'s growth factor: 3
- b(t)'s growth factor: 1/50
The greatest growth factor is 3
Answer: d(t)
Hope that helps!