1. Table
# guests | cost |
0 | 100 |
10 | 250 |
20 | 400 |
30 | 550 |
40 | 700 |
50 | 850 |
60 | 1000 |
70 | 1150 |
80 | 1300 |
2. Graph (created using Desmos)

3. The slope is 15. The \(y\)-intercept is 100.
4. \(y\) represents the cost given the number of guests, \(x\) represents the number of guests
5. \(y=100 + 15x\)