If there are 10 dogs in each room there are 40 dogs
6(8)+b/6
48+b/6
b/6=-48
b=-48/6
b=-288
Answer: option d.
Step-by-step explanation:
You have the following formul given in the problem:

You know that:
The number of customers serviced in an hour by the technical support representative is 6 costumbers, therefore:

As the problem asked for the probability that a costumber will be on hold less than 30 minutes, we know that:

Substitute the values above into the formula.
Then, you obtain:
or 95%
20,825 because I think you just multiply 245 and 85 and that should be the answer
Eg: 24936
Place value of 4 is 4x10 raised to the power of 3 or 4000