(4x^2+3) + (3x^2+8) = 7x^2+11
We know that
<span>the garden's perimeter is 112 =[(x+4)+(x+4)+(x+4)+(x+4)]
112=4*[x+4]------------ > 112/4=x+4
x=(112/4)-4=28-4=24 units
the answer is x=24 units</span>
month 4: 13.25*4=53. 53+50 = 103
month 4: 25.75*4 = 103
They both cost $103 on month 4