Let's see if we can find a pattern:
Row number 1 has
seats
Row number 2 has
seats
Row number 3 has
seats
Row number 4 has
seats
Can you see the pattern? After
rows, we have added
seats.
So, the 60th row will have

Answer:
4 times 312 = 1,248 = 312 times 4 = 1,248
Hope this helps, sorry if it didn't.
Answer:
2 × 3 × 3 × 5
Step-by-step explanation:
2 x 3 = 6
6 x 3 = 18
18 x 5 = 90
I believe you would create and equation to find x and y.