Seven times the difference of a number and nine is equal to three

Write an inequality for this description. - one fourth of the opposite of the difference of five and a number is less than twenty.

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?

If 3 3/4 lb. of candy costs 20.25 how much would 1lb. of candy cost