Answer:
495 combinations of 4 students can be selected.
Step-by-step explanation:
The order of the students in the sample is not important. So we use the combinations formula to solve this question.
Combinations formula:
is the number of different combinations of x objects from a set of n elements, given by the following formula.

How many combination of random samples of 4 students can be selected?
4 from a set of 12. So

495 combinations of 4 students can be selected.
X = -3.5 or -7/2 or -3 1/2
Answer:
Y - intercept is 1 , slope is 3
Answer:
Y=6
X=0
Step-by-step explanation:
Hope this helps
Answer:
30 bucks
Step-by-step explanation:
Just multiply 7 x 5