What’s the answer?????
2 answers:
You might be interested in
Answer:
Part (A): The scale of y: 1 interval being equal to 500 units and from 14,000 to 18,500.
Part (B): The good interval to use for the y-axis should be 1 to 10.
Step-by-step explanation:
Consider the provided information.
As we know the X axis represents the independent variable, since years are the independent variable. So, X axis represents the years.
Y axis represents the dependent variable, since average cost is dependent variable. So, Y axis represents the average cost.
Part (A) what is a good scale to use for the y-axis?
It is given that range is from $14,000 to $18,500.
So, 1 interval being equal to 500 units, so that it will suitable for 18,500.
The scale of y should be 14,000 to 18,500 as 14,000 is the starting average cost and 18,500 is the last average cost.
Part (b) what is a good interval to use for the y-axis?
The scale for x should be 1 year. As It should start from 1 to 10.
The good interval to use for the y-axis should be 1 to 10.
The required scale is shown in figure,
Answer:
Brand A = 21 heart-rate watches.
Brand B = 13 heart-rate watches.
Step-by-step explanation:
Let A be the number of Brand A heart watches and B be the number of Brand B heart watches.
We have been given that a nonprofit community health organization purchased 34 heart-rate watches for use at a wellness center.
We can represent this information in an equation as:
We have been given that in a certain year, brand A of heart-rate watch cost $39.99 and brand B cost $59.99 and the organization spent $1619.66 for the watches.
We can represent this information in an equation as:
We will use substitution method to solve our system of equations.
From equation (1) we will get,
Substituting in equation(2) we will get,
Therefore, the organisation purchased 13 heart-rate watches of brand B.
Now let us substitute B=13 in equation (1).
Therefore, the organisation purchased 21 heart-rate watches of brand A.