Marshall has a rectangular garden that he wants to enclose with a fence. To calculate the perimeter, he used the expression below, where w represents the width and l represents the length of the garden.
2w+2l
Which other expression could Marshall use to calculate the perimeter?
wl
2wl
2( w+2l )
2(w+l)

In the equations, a and b represent the price per night for a room in hotel a and hotel b, respectively, w weeks after september 1 last autumn. what was the price per night in hotel a when it was equal to the price per night in hotel b? a = 240 − 20w b = 320 − 30w

Which inequality has a dashed boundary line when graphed ?

Each person in an it department of 25 people works on at least one of 3 major projects: system security, program implementation, platform development. 10 people work on system security, 13 work on program implementation, and 12 work on platform development. 4 people work on system security and platform development, 5 people work on program implementation and platform development, and 2 people work on all three projects. how many people work on system security and program implementation?