6x + 14 = 80 solve for x

Miss henderson wants to build a fence around a rectangular garden in her backyard in the scale drawing the perimeter of the garden is 14 in of the actual length of a b is 20 ft how many feet of fencing what you need

Find an bif a = {3, 6, 9, 12) and b = {2, 4, 6, 8, 10).

What is the value of x in the equation7x+2y=48 when y=3