Yoon has a number of dimes and quarters that she wants to put into roles. she has 124 coins that add up to $20.50. if one role of quarters is 10 dollars, how many extra quarters will she have that won't fill up a role?

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 : )

were is the equation