Arectangle has an area of 221 square units. the width of the rectangle is 13 units. the length of the rectangle is 3x + 2. what is the measure of the rectangle's length?

c.

step-by-step explanation:

she should of added 9^2 and 12^2. that is because it is a^2+b^2=c^2. c^2 is the hypotenuse and should always be bigger than the other two numbers. which is why she should of added 9 squared and 12 squared together instead of 15 squared.