Arezoo youth tickets cost five dollars and adult tickets cost nine dollars for group that purchased extra youth tickets and why adult tickets spend $90 on tickets what is the domain of the relationship

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mxddi3 · Answer

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mxddi3 · Answer

Also, we are going to label our youth tickets as `x` and our adult tickets as `y`. Then, if the total was $90, this means that 5x+9y=90  (since it's $5 for a youth ticket, $9 for an adult ticket, and the total was $90). Now, domain is is x-values. So we need to solve for this. if we have 
5x+9y=90
we need to move the 9y to the other side. we are then left with
5x=90-9y
then from here, how do we isolate the "x" variable?