HELPP PLEASEE!! three times the sum of a number and 9 is 8

use the variable W for the unknown number

Factor and solve to find roots x squared -x - 90 =0

What is the length of side s of the square shown below?

Points j and k plotted on the coordinate grid are two vertices of rectangle jklm rectangle jklm has an area of 7 square units point j is located at 2,1 and point k is located at -5,1 each vertex of the rectangle is located at a point that has integer coordinates. what is the perimeter of rectangle jklm? (need answer asap)