How do i find the pythagorean theorem of this

Rectangle leg this 11feet and perimeter of 38feet what is the width of the rectangle in feet

Idon’t understand! use slope intercept form to solve: through: (2,5) slope= undefined

The u-drive rent-a-truck company plans to spend $13 million on 320 new vehicles. each commercial van will cost $25 comma 000, each small truck $50 comma 000, and each large truck  $80 comma 000. past experience shows that they need twice as many vans as small trucks. how many of each type of vehicle can they buy?