Answer:
400 people
Step-by-step explanation:
15 = 12
500 = x
Cross multiply
15x = 12 × 500
Divide both sides by 15
=
(* means multiplication if you do not know)
= 100 × 4= 400 people
You can draw the area bounded by the unequality

in following way:
1. Draw a dashed line

with a slope

(a dashed, because all points from this line, for example when x=0, y=-2 do not belong to the area);
2. Define which part (under the line or over the line) is suitable by substituting values. For example, when x=0 and y=0 you obtain that

is a right unequality, that means that the point (0,0) is a solution and belongs to the area;
3. Shade that part of the plane to which point (0,0) belongs, you receive the area over the line (see image).
From the done steps you can see that only fourth statement is true.
Answer:
82 seats
Step-by-step explanation:
50+4x(number row - 1)
50+4x(9-1)
50+4x8
50+32
82 seats for the ninth row
Answer:
It is linear pair
U can find Angle 'b' by using straight angle property