The price of an item increased from 20 to 30. The percentage of increase is pls help me I have exam after a week pls I hope you will help if you did I will foolw and like who did​

If 90° < θ < 180° and cotθ = -1/3, then cscθ =

Solving algebraic equations 2m+3=11

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?