Answer:
(-∞,-1.25]∪[1,2.5]
Step-by-step 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:)
