Im so happp i love my lifee

Glad you're happy.

Q18

360 = 0.2 a

a = 360 / .2 = 5(360)= 1800 audience members

Q19

Assuming the information is consistent we ignore the trapezoid; we have two triangles base 1.1 height 3.8 so the area for the pair is 2 (1/2) (1.1) (3.8) = 4.18 sq inches.

Q20

6(5)^2 - 5(4) + 8 = 6(25) -20 + 8 = 150 - 20 + 8 = 138

Q21

This is an LCM or least common multiple problem

LCM(12,8) = LCM(3(4),2(4))=3(2)(4)=24 weeks

There are two ways to confirm this is the answer. The first is to note that (3,-2) is on the boundary, so it is part of the solution set. This only works if the boundary line is a solid line (as opposed to a dashed or dotted line).

The second way is to plug (x,y) = (3,-2) into the given inequality to find that

which is a true statement. So this confirms that (3,-2) is in the solution set of the inequality.