If a:b =c:d, prove that : 3a +5b /3c-5d /3c-5d

What is the solution to the equation 9^(x+1) =27

Another type of subtraction equation is 16-b=7. explain how you would sole this equation then solve it.

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?