A farmer has 70 meters of fencing to enclose a rectangular garden that has one side of the garden against a barn. Let l represent the length of the rectangular garden (in meters). (Notice that the 90 meters of fencing is needed for only 3 sides of the garden.) Suppose the length of the garden is 30 meters ( l = 30 ). What is the width of the garden?What is the area of the garden?

This is B and C

Step-by-step explanation:

(B) L + 2w = 70

     2w = 70 - L

        w = (70 - L)/2

(C)    Area as a function of L:

         Area = length * width

                  =  L * (70-L)/2

c.

step-by-step explanation:

because first you have to add the 4x, 9x, and the 7x together and you get 20x and then you add the last numbers up and you get 5and then you put the subtraction sign in there and that's how you get the answer.

it’s the first one your welcome