Corey thinks that 5 + n means 5 plus a number. Is Corey correct?

Find x & pleeeeaaaassseeee me !

Jenisey has $24 to spend on seven pencils. after buying them she had $10. how much did each pencil cost.?

To solve the system of equations below, pedro isolated the variable y in the first equation and then substituted it into the second equation. what was the resulting equation? { 5y=10x {x^2+y^2=36