Given:
There are given that they get 4 sales calls and 7 tech support calls each weekday.
Step-by-step explanation:
According to the concept:
The total number of days in a week is 7.
Then,
From the question:
They get a total number of calls are:
Now,
The number of calls in a week will be:
Final answer:
Hence, the total numbers of calls he gets in a week are 77.