I think it would be y plus 3 times 2 equals 5x. I'm not sure if that is what they are asking for.
All the equations can be graphed and solved by graphing. They can also be solved using various other methods
Answer:
if the signs are the sama, add the numbers
On the face of it, [5.3%, 8.65%].
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If you mean that up to 8.65% may be added to the base 5.3% rate, then the total can be in the range [5.3%, 13.95%].
Answer:
39.34 juniors and 30.1 seniors
