Question

Can someone help me with this?

Answer 1

`4x + 10y = 28 \\ 5x + 9y = 28 \\ 10y = 28 - 4x \\ y = (28 - 4x)/(10) \\ y = 2.8 - 0.4x \\ 5x + 9(2.8 - 0.4x) = 28 \\ 25.2 - 3.6x + 5x = 28 \\ 1.4x = 2.8 \\ x = 2 \\`

`y = 2.8 - 0.4 * 2 \\ y = 2`

B

Answer 2

B

Explanation:

4x4= 8

10x10= 20

8+20= 28

5x2= 10

9x2= 18

10+18= 28