Question

Which intervals show f(x) decreasing ? Check all that apply

Answer 1

(-∞,-1.25]∪[1,2.5]

Explanation:

i'm assuming there are no answer choices, so the intervals at which there is a negative slope for this function are:

(-∞,-1.25]∪[1,2.5]

the brackets indicate that the point is included, and the parentheses indicate that it is not included. comment under my response if you need further clarification:)