X^2+11x+18<0 ----- Subtract 18 from both sides
(x+2)(x+9)=0-------- Factor the left side
------Set factors equal to zero
Your answer is -9<x<-2
Answer: BBBBBB
Step-by-step explanation:
Answer:
<em>The average cost is less than 100 when the number of items x is greater than 2</em>
Step-by-step explanation:
The cost equation is 
The average cost 
We want to know when the cost Cp is less than 100.
So
For 
The average cost is less than 100 when 
<span>Josh swims 5 more hours per week than David so his hours = 3x + 5
His </span><span>average speed is 4 laps per hour less than David's so it is = x - 4
</span>
Total distance = hours * speed
= (3x + 5)*(x - 4)
= 3x^2 - 7x - 20
Ans is C
There would be a vertical dotted line at -1 and a horizontal solid line at -3. Then you could shade the lower right hand corner.
