What the answer for 0+4t=7t+15

Will give brainliest what is the value of x? enter your answer in the box.

In the diagram of circle a what is m

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?