For this case we have the following equation:
[tex]y = -5.131x ^ 2 + 31.821x - 3.333
[/tex]
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:
[tex]y = -5.131 * (2) ^ 2 + 31.821 * (2) - 3.333
y = 39,785[/tex]
Rounding to the nearest whole number:
[tex]y = 40
[/tex]
Answer:
the best estimate for the number of people in line at 7 a.m. is:
y = 40
