The graph to the right shows the relationship between the time, x, and heartbeats, y. Which equation describes the relationship of resting heart rate on this graph? 1)y=2x. 2)y=x. 3)y=1.25x. 4) y=1.5x

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?