B)
1.80c +3h = 288.60
c=1 -2h
1) Gathering the data
Cold lunch (c) : $1.80
Hot lunch (h) : $3.00
Total $288.60
c = 1 -2h
2) Let's set up a system of equations, based on that
1.80c +3h = 288.60 This equation relates the cost of those lunches
c=1 -2h The relationship between the number of lunches
Examining the options:
3) We can state that the answer is B