As ordered pairs ( g , C ) where g is the number of games and C is the cost
( 5, 20.50) and ( 9, 28.50)
the slope M = ( 28.50 - 20.50 ) / (9-5)
= 8/4
= 2
So the slope M=$2 per game
Using (5, 20.50)
The intercept B = y - m* g
= 20.50 - 2 * 5
= 20.50 - 10
= 10.50
So the fixed base cost, or FLAT RATE is $10.50.
That is if they played ZER0 games, they still have
to pay $10.50 just to get in.
The linear function is C (g) = 2*g + 10.50
Answer: The percent of red lights last between 2.5 and 3.5 minutes = 95.44% approx.
Step-by-step explanation:
Given: Mean time = 3 minutes
standard deviation = 0.25 minutes
The probability of red lights last between 2.5 and 3.5 minutes :-
![P(2.5](https://tex.z-dn.net/?f=P%282.5%3Cx%3C3.5%29%5C%5C%5C%5C%3DP%28%5Cdfrac%7B2.5-3%7D%7B0.25%7D%3C%5Cdfrac%7Bx-%5Cmu%7D%7B%5Csigma%7D%3C%5Cdfrac%7B3.5-3%7D%7B0.25%7D%29%5C%5C%5C%5C%3DP%28-2%3Cz%3C2%29%5C%5C%5C%5C%3D2P%28Z%3C2%29-1%5C%5C%5C%5C%3D2%280.9772%29-1%5C%5C%5C%5C%3D0.9544)
The percent of red lights last between 2.5 and 3.5 minutes = 95.44% approx.
You add 3 2/7. 7/1-3 5/7= 3 2/7