We are given the following data in tabulated form:
Call minutes, y Bill
Amount ($), x
125 75
150 85
175 95
200 105
We can see that for every 25 increase in call minutes,
there is a constant 10 increase in bill amount. Therefore the equation relating
the two variables is linear. The call minutes is y while the bill amount is x,
therefore:
y = m x + b
where m is the slope and b is the y-intercept
Calculating for the slope m:
m = (y2 – y1) / (x2 – x1)
m = (150 -125) / (85 – 75)
m = 2.5
So, y = 2.5 x + b
Calculating for b using the 1st pair:
125 = 2.5 (75) + b
b = - 62.5
So the final equation is:
y = 2.5 x – 62.5
To match, simply plug in the value of the bill amount ($)
as x in the equation and the answer will be y which is the call minutes.
Answer:
Marco earned $2.25.
Step-by-step explanation:
1. If Marco sold 12 cups of lemonade for 3$, we would divide 12 cups and how much he earned from the 12 cups (3$). 12/3 = 4
2. By the end of the day, Marco earned $9. So, 4 cups = 1$. To break it down, 1$ = 100 cents and 100 cents divided by 4 is 25 cents. Cups to Cost. ( 4 : 1 ) and/or ( 1 : 0.25 )
3. 8 cups = 2$ plus 1 cup (0.25) = 2.25.
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Answer:
The percentage of employees with 8 or more years at the company that reported that email is their preferred method of communication is 30.48%. I suppose there was a small typing mistake in option B.
Step-by-step explanation:
The proportion is the number of desired outcomes divided by the number of total outcomes.
The percentage is the proportion multiplied by 100.
In this question:
210 employees with 8 of more year.
Of those, 64 have the email as their preferred method of communication.
64/210 = 0.3048
0.3048*100 = 30.48%
The percentage of employees with 8 or more years at the company that reported that email is their preferred method of communication is 30.48%. I suppose there was a small typing mistake in option B.
