Let u = < 7, -3> , v = < -9, 5> . find 4u - 3v. < 55, -27> < 1, 3> < 16, 12> < -8, -6> i have no idea where to get started, so if you can explain how to solve this i would appreciate it!

Problem melissa is her dad build a walkway in their backyard. the walkway will be 54 feet long and 1.5 feet wide. the local hardware store sells tiles which are 1.5 by 1.5 feet and come in boxes of 12. how many boxes of tiles do they need?

The table represents a function. what is f(-2)? a.-3 b. -1 c.1 d.3

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?