Answer:
We get Q=63 when p=81
Option A is correct.
Step-by-step explanation:
We are given that 
We can write it as 
Where k is constant of proportionality.
We are given Q = 21 when p = 9
Using this Q = 21 when p = 9 we can find value of k
So, we get constant of proportionality k = 7
Now, Finding the value of Q when p = 81
We are given p=81, k=7, we need to find Q
Using the equation we can find value of Q.
So, we get Q=63 when p=81
Option A is correct.
Answer:
Each person will pay $9.78
Step-by-step explanation:
Given that:
Amount of bill = $34
Tip = 15%
Amount of tip = 
Amount of tip = 0.15 * 34
Amount of tip = $5.10
Amount after bill = 34 + 5.10 = $39.10
Number of people = William + three friends = 4
Per person share = 
Per person share = $9.775
Rounded to two decimal places
Per person share = $9.78
Hence,
Each person will pay $9.78
Yeah, part C seems right to me. Have a good day or night !
Answer:
A rectangle is a good, simple shape to begin with. The area of a rectangle is equal to the product of the length of its base and the length of its height. The height is a segment that is perpendicular to the base. For a rectangle, the base and height are often called the "length" and the "width", and sometimes the height is referred to as the "altitude."
Step-by-step explanation
Mark me as brainiest
It seems appropriate to use the linear regression function of your calculator for this. Looking at the data, you know the slope is generally positive, so only the 1st and 3rd choices are potentially viable.
A calculator shows the correlation coefficient (r) rounds to 0.816, so the appropriate selection is ...
A. 0.816
