20% of Aussies have blue eyes. If 4 Aussies in a play group have blue eyes, how many Aussies are in the group?

20

Step-by-step explanation:

Step 1: 4 = 20% × Y

Step 2: 4 = 20/100 × Y

Multiplying both sides by 100 and dividing both sides of the equation by 20 we will arrive at:

Step 3: Y = 4 × 100/20

Step 4:Y = 4 × 100 ÷ 20

Step 5: Y = 20

One of the four has blue eyes

ANSWER

Option C

EXPLANATION

The given inequality is

We add 3 to both sides to get,

The corresponding linear equation is

This becomes the dashed boundary line of the inequality.

We test the origin to determine which half plane to shade.

This is false.

Hence we shade the upper half plane.

The correct answer is C