Aresearcher wishes to determine whether there is a difference in the average age of elementary school, high school, and community college teachers. teachers are randomly selected from each group. their ages are recorded below. test the claim that at least one mean is different from the others. use alpha = 0.01.

alright well the answers to your question is

2xy/9 hope this have a nice day : )

step-by-step explanation:

3

step-by-step explanation:

divide 13.5 by 9 to get the scale factor. it equals 1.5

2 * 1.5 = 3

c.

step-by-step explanation:

substitution for (0,1)

y=x^2+4x+1

1=0^2+4(x)0+1

1=0+4(x)0+1

1=4(x)0+1

1=0+1

1=1

substitution for (-3,-2)

y=x+1

-2=-3+1

-2=-2