**Answer:**

Step(iii)

The value of 'f' = 3

**Step-by-step explanation:**

<u><em>**Step(i):-**</em></u>

Given - 12 = 4(f-6)

Multiply

- 12 = 4 f - 24

<u><em>**Step(ii):-**</em></u>

- 12 = 4 f - 24

Adding '12' on both sides, we get

- 12 + 12 = 4 f - 24 + 12

0 = 4 f - 12

4f - 12 =0

4 f = 12

<u><em>**Step(iii):**</em></u>-

Dividing '4' on both sides, we get

f = 3

**Answer:**

22 months

**Step-by-step explanation:**

variable x = number of months

800 + 100x = 3000

isolate the variable x

100x = 3000 - 800

100x = 2200

x = 2200 ÷ 100

x = 22

**Answer:**

Potato

**Step-by-step explanation:**

1 kg = 1000 g

Assuming the potatoes have the same mass, and the pears have the same mass, then the mass of each potato is:

1000 g / 5 = 200 g

And the mass of each pear is:

1200 g / 8 = 150 g

So a potato has more mass than a pear.

Answer:8

Step-by-step explanation: