MARKING BRAINLIEST HELP!!

Which steps could be part of the process in algebraically solving the system of equations, y+5x=x^2+10 and y=4x-10

21 a stick 7 inches long is broken into two pieces, so that one piece is twice as long as the other one. how long are the two pieces?

Agroup of three friends order a combo meal which includes two slices of pizza and a drink each drink is priced at $2.50 the combined total of $31.50 how much is the cost of a slice of pizza