Using a calculator, the slope of the line of best-fit is of 7.2.
<h3>How to find the equation of linear regression using a calculator?</h3>
To find the equation, we need to insert the points (x,y) in the calculator.
In this problem, the points are given as follows:
(-4,-32), (-2,-8), (0,10), (2,8), (4,32).
Using the calculator, the equation is:
y = 7.2x + 2.
Hence the slope is of 7.2.
More can be learned about a line of best-fit at brainly.com/question/22992800
#SPJ1
Answer:
17
Step-by-step explanation:
n(Band and Choir only)
= 25 - 11 - 7 - 3 = 4
n(Math and Band only)
= 7
n(Math and Choir only)
= 57 - (25 + 17 + 9)
= 6
Exactly 2:
4 + 7 + 6
= 17
