Help please, thank you so much!

If c(x) = 4x – 2 and d(x) = x2 + 5x, what is (cxd)(x)

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?

5x−4≥12 or 12x+5≤−4 can you with this problem