3kg of meat costs £54
Nina buys 2 kg of the meat.
Work out how much Nina pays

£36

Step-by-step explanation:

3kg = 54

÷ 3

1kg = 18

18 × 2 = 36

hope this helps...

x = -3

y = -18

step-by-step explanation:

to solve by substitution, substitute one variable and solve for the other. then substitute again to find the remaining variable.

x-1/3(3x-9) = -3 since y=3x-9 substittute y.

x-1/3(3x-9)=-3

x + x +3 = -3

2x+3=-3

2x+3-3= -3-3

2x=-6

x=-3

substitute again into y=3x-9

y=3(-3)-9

y=-9-9

y=-18

2x^2+5x+17

your welcome. : )