Mathew invested $3000 into two accounts. One account paid 3% interest and the other paid 8% interest. He earned 4% interest on the total investment

Step-by-step explanation:

What is the question?

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4+n=5

step-by-step explanation:

this is because the four is four hours and the n represents the 1 extra hour over the weekend.

b= i'm srry i don't know that one.

4+n=5 n=1 because if vernon plays 5 hours a week then 4+1=5 hours.

hope this : )