For question 3, is it right though?

Christina can paint 420 square feet in 105 minutes. which unit rate describes the scenario?

Zoey made 5 1/2 cups of trail mix for a camping trip. she wants to divide the trail mix into 3/4 cup servings. a. ten people are going on the trip. can zoey make enough 3/4 cup servings so that each person gets one serving? b. what size would the servings need to be for everyone to have a serving?

The function f(x)= -(x+5)(x+1) is down. what is the range of the function?