For this case we have the following equation:

When it's 5 a.m. then x = 0
Therefore, when it is 7 a.m. then x = 2.
Substituting x = 2 in the equation we have:

Rounding to the nearest whole number:
Answer:
the best estimate for the number of people in line at 7 a.m. is:
y = 40
Answer:
113.1 yd^2
Step-by-step explanation:
C^2/4 times 3.14/pi
C= 2 x pi x radius
20 x pi
=62.831853.....
to the nearest 10th, this is 63. so the answer is 63 inches.