The sum of 4 consecutive old numbers is 40. what is the second number in the sequence

Which of the binomials below is a factor of this trinominal? x^2-13+30

Write an algebraic expression to match each statement a. four less than 8 times a number b. twice the difference of a number and six c. nine from a number squared

I’m really confused and need your assist me with this question i’ve never been taught