Set t=0 so
x²-1936=0
(x-44)²=0
x=44 phones he must cell to break even
Answer would be C.
Why A would be incorrect: 100m^2 is 100m × 100 m. That would be as big as a football field.
Why B would be incorrect: 1cm^2 is 1cm × 1cm. You can use a regular 15 cm to measure a piece of paper with the length of 1cm each side.
Why C would be correct: 1m^2 = 1m × 1m and it is also equals to 60cm × 60 cm. A 1 meter ruler = 60 cm = 4 times of your average 15 cm ruler. So, it is reasonable that a classroom is 10m by 10m in length and breadth.
Why D would be incorrect: The same explanation applies to here as well. Things that can be measured with 1m × 1m is a square table so your classroom can't be that small to fit an average of 30 to 40 students in there.
I hope my explanations were detailed and easy to understand. :)
So first you’re equation will be y=-400x+4800. That equation is set in y=Mx+b form where m is the slope and b is the y intercept. X-values are independent and y-values are dependent. The y intercept is 4800 because that is the beginning deposit. The x intercept is 12 and we get that when we set y as 0 and solve for x. The slope is -400 because we are losing that every month. Going with m as months, y=-400m+4800
Answer:
7
Step-by-step explanation:
variable = 84/12
= 7
