3(x+6)+8x how to do the 7th grade steps to get the answer

Which of the following answers is 7/9 simplified? 7/9 2/9 11/9 2/7

Write the expression in complete factored form. 5n_(c - 3) - n(c - 3) =

Tim's phone service charges $26.39 plus an additional $0.21 for each text message sent per month. if tim's phone bill was $31.64, which equation could be used to find how many text messages, x, tim sent last month?