Select the correct answer. teacher wants to compare scores on a geology exam for two classes. The difference between the sample means is 21.4. If the standard
deviation of the distribution of the difference between sample means is
16.66, and she is testing the hypothesis at the 68% confidence level,
vhich statement is true?

option a.

step-by-step explanation:

if you look closely at the graph, we can notice that the function is not defined at two different points.

if you look at functions b and c, you will notice that both functions are not defined at just one point. the function b is not defined at x= -5/2 and function c is not defined at x=-5. both options are discarded, given that our function should not be defined at two fiferent points.

now, if you look closely at the graph you will notice that the function sketched is not defined at x=5 and x=-2.

nothjing

step-by-step explanation:

you would have to sell 24 bracelets.

step-by-step explanation:

84/3.5 = 24

i believe the answer is the polygon, heptagon.