Answer:
<h2>18</h2>
Step-by-step explanation:

Answer:
x=-1
Step-by-step explanation:
-2x - 5 = -3
add 5 to both sides
-2x = 2
divide both sides by -2
x = -1
Center: 0,0
vertex: 5,0
vertex2 (-5,0)
Answer: The waiting time will be 32 minutes when 240 people in line.
Step-by-step explanation:
Let us assume that the waiting time is directly proportional to the number of people in the queue.
Equation of direct proportion between variables x and y : 
Put
to find
.

Hence, the waiting time will be 32 minutes when 240 people in line.
70% I think beacuse she is making more profit about 70% then she bought it for