Answer:
Negative! -5/2
Step-by-step explanation:
.......
Let side be "a" cm. So another side is (30-2a)/2=15-a
S=ab=a(15-a)=15a-a^2 - parabola
maximum when a = -15/-2=7.5 cm
When a=7.5 all sides are 7.5 cm
So it's a square. S=a*a=7.5*7.5=56.25 cm^2 - max
There is no global minimun for S.(look at the graphic)
Are you really in elementary school? This is like 8th grade or high school math....
Since you used 28% of your paper
28% = .28
500 x .28 = 140 sheets used
0,500) (1,360)
m = 360-500/1-0
m = -140
Answer:
<em>y = -140x + 500</em>