15 less than twice a number is less than or equal to -23. Into an equation

Which expression gives the area of the triangle shown below

What is the value of x in the equation 2(x-4) = 4(2x + 1)?

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?