There ar 4persons so each will pay
Only two persons have spent more money than everyone average i.e mia and Jasmin.
Now
- Mia has-28.47
- Jasmin has=20.99
Mia left more money so she saved most money.
1/sin(38)*7=11.4
Hope it helps
Unknown factor is multiplication and then quotient is division
I used the substitution method and got (0,-2)
A = 1/2 h(b + x)
2a = h(b + x)
2a/h = b + x
x = 2a/h - b