Help with number 14! it’s due tomorrow.

7(x - 2) = 3(x + 4) solve the following equation. then enter your answer in the space provided using mixed number format.

The anwser cause i do not understand just plez

Ineed big ! the cost of a school banquet is $25 plus $15 for each person attending. create a table, sketch the graph, and write an equation in slope-intercept and point-slope form that gives total cost as a function of the number of people attending. what is the cost for 77 people?