PLS HELP ME, I only need to know if they’re permutations or combinations PLS ILL MARK BRAINLIESTTT

A. 127 cm^2 b. 144.5 cm^2 c. 172 cm^2 d. 50 cm^2

Agroup of students want to create a garden. they do not know the exact measurements but they propose using a variable to represent the length and width of the garden. the length of the garden is 10 feet longer than double the width. use a single variable to write algebraic expressions for both the length and width of the garden. write an algebraic expression for the area of the garden. use mathematical terms to describe this expression.

David leaves his house to go to school. he walks 200 meters west and 300 meters north. how far is david from his original starting point?