Josh is preparing for an exam by completing practice tests that have different numbers of questions. For each practice test, he notes the number of questions and the time it takes him to complete the test. Next, Josh creates a scatter plot and draws a trend line to fit the data. To see how well the trend line represents the data, Josh draws black lines to represent the distance each data point lies away from the trend line. What is the sum of the residuals for all the points? A. 58 B. 97 C. 19 D. 39

15 units use socratic

step-by-step explanation: 15 units

question 1 is 8, question 2 is 9, question 3 is 24

step-by-step explanation:

now, the numbers they give you at the top are the key. from there, you just have to plug and chug! let's try 1, 2, and 3!

key: a=3, b=5, c=6

1. a+5

remember, a=3, so we plug that in to get 3+5=8

2. 15-c

c=6, so we plug that in to get 15-6=9

3. 4b

b=6, so we plug it in to get 4*6=24

time to try the rest on your own! if you put the answers below in a comment, i'll check them for you!

the function makes a strait line horizontally with no x intercept but a y intercept at 9.