Question

Look at the pic below and please help.

Answer 1

Answer:

1) Equation's:

• y = 500 + 15x

• y = 350 + 18x

2) Number of guest and the charge:

• Cost is same for both at 50 meals. The cost is $1250.

Part 1

Turn sentences into equation's (Let 'y' be total cost and x per meal) :

(i) charges $500 and $15 per meal

• y = 500 + 15x

(ii) charges $350 and $18 per meal

• y = 350 + 18x

Part 2

            y  =  y

500 + 15x = 350 + 18x

18x - 15x = 500 - 350

3x = 150

x = 150/3

x = 50

Charge at guest's 50 meal:

y = 500 + 15(50)

y = $1250

Point : (50, 1250)