Answer:
Step-by-step explanation:
D
Answer:
5
Step-by-step explanation:
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There is not enough context to answer the question.
But if you add all the test grades together (which there should be 6 I think) then you divide by 6 and you get the average test grade
Answer:
if they vary together then y would be 2
Step-by-step explanation:
since they vary together 5 multiplied by 3 is 15 so you would divide 6 by 3 to get 2 the z is irrelevant because it has no relation to x or y