Answer:
120 pounds
Step-by-step explanation:
Since the new cost is 144 pounds and this is 20% more, this is 120% of the original price. Remember 100+20 = 120. To find the original price set up a proportion with these values:
Solve for the original price by cross multiplying numerator with denominator.
x(120) = 144(100)
120x = 14400
x= 120 pounds
If the net was folded into a cylinder, the length of the rentangle would be the circumference of the circle since it wraps around it.
C = 2pi*r
So 2pi*3 = 6pi
Then multiply by the height to get 84pi
Then the area of a circle is pi*r^2
We have two circles so 2 * pi * 3^2 = 18pi
Add to get 84pi + 18pi = 102pi.
Youre missing a graph, but luckily I figured it out.
B Is correct.
C is correct. Domain: (−∞,∞)
