x²+y²-2x-6y-5=0
x²-2x+y²-6y=5
x²-2x+1+y²-6y+9=5+1+9
(x-1)²+(y-3)²=15
(x-1)²+(y-3)²=(V15)²
-> centre of the circle: C(-1,-3)
-> radius of the circle: V15
It costs each person $2.40.
Answer:
35 combinations of a starter and a main course.
Step-by-step explanation:
1a, 1b, 1c, 1d, 1e, 1f, 1g
2a, 2b, 2c, 2d, 2e, 2f, 2g
3a, 3b, 3c, 3d, 3e, 3f, 3g
4a, 4b, 4c, 4d, 4e, 4f, 4g
5a, 5b, 5c, 5d, 5e, 5f, 5g
i hope this helps
