Eight times the difference between a number and six is equal to four times the number. What’s the number?

Tim's phone service charges $23.06 plus an additional $0.22 for each text message sent per month. if tim's phone bill was $28.56, which equation could be used to find how many text messages, x, tim sent last month?

Last one and the bottom answer choice is y=(x-4)^2+1 you guys!

Factor the polynomial. b^2 + 4b + 4