Day. He wants to buy the smallest bag that has enough food to feed his dog for one month. Should he buy the bag that has 1.8 kilograms, 2.4 kilograms, or 4.2 kilograms of dog food? ​

4.2 kilograms

Step-by-step explanation:

The computation is shown below:

As nothing is specified so we assume that the range would be from 28 to 31

Now if we do the following calculation i.e.

= 28 ×0.12

= 3.36

This is nearest to 4.2 kilograms

hence, the same represent the answer

(4,10)

Step-by-step explanation:

   8x - 5y = -18

+  2x + 5y = 58

10x = 40

Dive both sides by 10.

x = 4

2x + 5y = 58

2(4) + 5y = 58

8 + 5y = 58

5y = 50

y = 10