What is the m and b in the equation y = m + 1

Factorize: x^2+8x+10 i just solved it but i don't know if the process is correct

The perimeter of a stage is 116 feet. it is 17 feet wide. how long is it?

Ten members of balin's soccer team ran warm ups for practice. each member ran the same distance. their combined distance was 5/6 of a mile. to find the distance that each member ran, balin wrote the expression below.