IF ABC =8 , BC=12, AC =12 , and DE=16 what is the perimeter for triangle DEF

Solve the equation for x.3(6x - 1) = 12 i've tried doing the math and i can't find out what i'm doing wrong

The area of a rectangle is 10 cm^2. one side of the rectangle is x cm. express the perimeter of the rectangle in terms of x and show that this rectangle cannot have a perimeter of 12 cm. the perimeter of the rectangle in terms of x is __ cm

If 3 3/4 lb. of candy costs 20.25 how much would 1lb. of candy cost