Y’all someone help pls 5x-3=21-x

What is the perimeter of square abcd? units units 28 units 37 units

5x−4≥12 or 12x+5≤−4 can you with this problem

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?