So let R equal to the revenue of the company
x be the number of rides
since the cost per ride is $ 35
so the equation for revenue is
R = 35x
the profit can also be solve
profit = revenue - cost
profit = R - C
profit = 35x - 15x - 2000
profit = 20x - 2000
1. Only true to division. Most likely though when multiplying it's more helpful to have the denominators the same.
2. True
3. False
4. True
Answer:


And tha's equivalent to use this formula:


Step-by-step explanation:
For this case the 95%of the values are between the following two values:
(75 , 163)
And for this case we know that the variable of interest X "length of a movie" follows a normal distribution:

We can estimate the true mean with the following formula:

Now we know that in the normal standard distribution we know that we have 95% of the values between 1.96 deviations from the mean. We can find the value of the deviation with this formula:


And tha's equivalent to use this formula:


1/x^2. Remember that any number raised to a negative power is the reciprocal.
Its 90 because 90 divided by 10 simplifies down to 9, and 9+8=17