1. A study of administrative ratings and student ratings of the performance of high school statistics teachers reports a correlation of r= 1.15 between the two ratings. From this information, we can
conclude that
(A) Administration and students tend to agree on who is a good teacher
(B) There is little relationship between administration and student ratings of teachers
(C) There is a strong association between administration and student ratings of teachers, but it would
be incorrect to infer ausation
(D) An error was made in calculating the linear correlation coefficient
2. Data are obtained for a group of college freshman examining their SAT scores from their senior

option c) graph of line going through 1, 4 and 3, 10

step-by-step explanation:

let y equal to margo's coin collection

let x equal to number of years

at the begining x=0, y=1 → point=(x,y)→point=(0,1)

she adds 3 coins per year, then y=1+3x

at x=1, y=1+3(1)=1+3→y=4→point=(x,y)→point=(1,4)

at x=3, y=1+3(3)=1+9→y=10→point=(x,y)→point=(3,10)

the graph of line going through (1, 4) and (3, 10), then the option c is the correct.

5x + 5

step-by-step explanation:

you should always add the diagrams and graphs we cannot see. this particular question is kind of borderline because we can make a graph for you.

(f + g)x = -x^2 +3x + 5 + x^2 + 2x

(f + g)x = 5x + 5

the graph of z = 5x + 5 is shown below. always use desmos when in doubt.

answer: what are the answer choices?

step-by-step explanation: