Question

a gardener wants to make a rectangular enclosure using a wall as one side and 160m of fencing for the other three sides, as shown. For what values of x is the area of the enclosure more than 3000m^2 but less than 3150m^2?

Answer 1

STEP 1: MAKE A DIAGRAM
done

STEP 2: MAKE EQUATIONS
2x+l=160
x*l=area

STEP 3: SOLVE FOR X (or l)
x*l=3000
2x+l=160
...