Answer:
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Answer:

Step-by-step explanation:
Given


Required
Determine the profit function
This is calculated as follows:

Substitute values for R(x) and C(x)

Open bracket

Collect like terms


Answer: 53
Step-by-step explanation:
First find the absolute values of the numbers and then add them.
The absolute value of -34 is 34
The absolute value of 19 is 19
34 + 19 = 53
Answer:
Step-by-step explanation:
Given that points scored is the dependent variable Y and Number of people attending the game is the independent variable is independent variable x
The correlation coefficient, slope and intercept are calculated as shown below:
x y
378 54
350 57
320 59
478 80
451 82
250 75
489 73
451 53
410 67
215 78
113 67
250 56
450 85
489 101
472 99
Mean 371.0666667 72.4
std dev 117.5138087 15.42632259
covariance 667.5733333
r 0.394558035
Slope 3.005642934
Intercept 153.4581182
y = 3.006x+153.46 is the regression line.
Corre = 0.3945 (weak positive)
1) 1hour 10minutes =

hours,
50 minutes =

hours
2) speed of plane against the wind =

3) speed of plane on the the wind =

4) (336-240):2=48miles/hours - speed of wind
5)336-48=288miles/hours - plane's speed <span>in still air
Answer: speed of wind is 48 miles/hours, speed of </span>plane in still air is 288 miles/hours