Answer:
33
Step-by-step explanation:
An easy way to do this is create a proportion.
[tex]\frac{18}{6} = \frac{x}{11}[/tex]
Keep in mind you could also write this equation as [tex]\frac{6}{18} = \frac{11}{x}[/tex] as long as you are consistent. The number of calls should be in the same place and the hours should also be in the same place (either the numerator or denominator).
Next, just cross multiply.
6x = (18)(11)
6x = 198
x = 33 calls
