Green Leaf Lawn Care had 64 customers under contract at the start of the year. The company's owner expects his new radio adverti
sements will attract 2 new customers every week.
If the radio commercials produce new customers exactly as the owner expects, which of these equations represents the number of customers (c) Green Leaf Lawn Care will have after w weeks?
If the radio commercials produce new customers exactly as the owner expects, which of these equations represents the number of customers (c) Green Leaf Lawn Care will have after w weeks?
2 answers:
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For this case, we have to:
By definition, we know:
The domain of is given by all real numbers.
Adding or removing numbers to the variable within the root implies a translation of the function vertically or horizontally. In the same way, its domain will be given by the real numbers, independently of the sign of the term inside the root. Thus, it will always be defined.
So, we have:
with
:
is defined.
with
is also defined.
has a domain from 0 to ∞.
Adding or removing numbers to the variable within the root implies a translation of the function vertically or horizontally. For it to be defined, the term within the root must be positive.
Thus, we observe that:
is not defined, the term inside the root is negative when
.
While if it is defined for
.
Answer:
Option b
