Since opening night, attendance at Play A has increased steadily, while attendance at Play B first rose and then fell. Equations modeling the daily attendance y at each play are shown below, where x is the number of days since opening night. On what day(s) was the attendance the same at both plays? What was the attendance?

Play A: y = 7x + 84
Play B: y = -x^2 + 40x - 6

A. The attendance was the same on day 30. The attendance was 294 at both plays that day.
B. The attendance was the same on day 3. The attendance was 105 at both plays that day.
C. The attendance was never the same at both plays.
D. The attendance was the same on days 3 and 30. The attendance at both plays on those days was 105 and 294 respectively.

b

step-by-step explanation:

ez

there are no short passages to look at

answer: your gay

step-by-step explanation:

you dont know math

d. 24+-0.114

step-by-step explanation:

the question requires us to calculate the approximate 95% confidence interval for the mean number of ounces of ketchup per bottle in the sample given the following statistics;

sample mean = 24

standard deviation, σ = 0.4

sample size , n = 49

the confidence interval for a population mean is calculated using the formula;

sample mean ± z-score*(σ/sqrt(n))

the z-score associated with a 95% confidence interval, from the standard normal tables, is;

1.96

substituting these values into the formula;

24 ± 1.96*(0.4/7)

= 24 ± 0.112

from the alternatives given, choice d is closest to the above expression;