What is the formula x cubed dilated vertically by a factor of 5 and reflected about the y-axis

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?

1.based of the diagrams what is the the value of x? 2.how would you verify your answer for x

Olga bought a new skirt that cost $20. sales tax is 5%. how much did olga pay, including sales tax? 7.