Question

What is the interval of decrease?

Answer 1

The answer is D (-infinity, 2)

Answer 2

Answer: D. (-infinity, 2)

This is the interval
`-\infty < x < 2`

On this interval, the function curve is going downhill as you read it from left to right.

More technically, the function is decreasing on this interval because f(a) > f(b) where a < b. For example, f(0) > f(2) and note that 0 < 2.