This is the last one i swear...thanks to all for helping with the last 2 <3 you all are life savers.seriously

If x is 6, then 7x= a. 13 b. 42 c. 42x d. 76

What is the effect on the graph of the function f(x)=x when f(x) is replaced with -f(x)+4

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?