Answer:
Part a) Is a positive correlation
Part b) ![\$69.5](https://tex.z-dn.net/?f=%5C%2469.5)
Part c) see the explanation
Step-by-step explanation:
Let
x ----> the number of items sold
y ----> the money spent on advertising
Part a) How would you characterize the relationship between money spent on advertising and items sold?
we know that
Positive correlation is a relationship between two variables in which both variables move in the same direction
so
As the value of x increases, the value of y increases
therefore
Is a positive correlation
Part b) Sally uses the function y = 1.6x + 21.5 to model the situation. What score does the model predict should be spent in advertising to sell 30 items?
we have
![y=1.6x+21.5](https://tex.z-dn.net/?f=y%3D1.6x%2B21.5)
For x=30 items
substitute the value of x in the linear equation and solve for y
![y=1.6(30)+21.5=\$69.5](https://tex.z-dn.net/?f=y%3D1.6%2830%29%2B21.5%3D%5C%2469.5)
Part c) What does the number 21.5 in Part (b) mean in the context of the situation?
we have
![y=1.6x+21.5](https://tex.z-dn.net/?f=y%3D1.6x%2B21.5)
This is a linear equation in slope intercept form
where
The slope is
![m=\$1.6\ per\ item\ sold](https://tex.z-dn.net/?f=m%3D%5C%241.6%5C%20per%5C%20item%5C%20sold)
The y-intercept or initial value is
![b=\$21.5](https://tex.z-dn.net/?f=b%3D%5C%2421.5)
therefore
In the context of the situation the number 21.5 means the initial amount spent at the begin (when the number of items sold was zero)
Well 1.25 meters per second so 1.25 x 8 = 10
so 10 meters in 8 seconds
Answer:
Step-by-step explanation:
r=C
/2π=1.27
Diameter= 2 times radius=2.54
A= Pir squared=201.06
It takes 147.87 milliliter to make ice cube
<em><u>Solution:</u></em>
Given that ice cube is made of 5 fluid ounces of water
To find: milliliters of water to make to the ice cube
So we have to convert 5 ounce to milliliter
<em><u>Use the following conversion factor</u></em>
1 ounce = 29.5735 milliliter
Therefore,
5 ounce = 5 x 29.5735 milliliter
5 ounce = 147.8675 milliliter
On rounding to nearest hundred ( 2 decimal places ) , we get
5 ounce = 147.87 milliliter
Thus it takes 147.87 milliliter to make ice cube