Answer:
Domain:
Range:
Step-by-step explanation:
Given
Required
Determine the domain and the range
Solving for domain:
From the question, we understand that t represent years.
Because years can't be negative;
Then, we can conclude that the domain, t is:
Solving for Range:
We solved domain to be
This implies that the minimum value of t is and the maximum is infinity
Substitute 0 for t in
Hence;
The range is
Answer:
<h2>The construction crew has a speed of 2.75 feet per hour.</h2>Step-by-step explanation:
In this problem, we have to find the unit rate, that is, the distance deep per hour, which can be also determined as the speed of the crew.
We know that after 3 hours, the hole is 8.25 feet deep. To find the unit rate we need to divide
Therefore, the construction crew has a speed of 2.75 feet per hour, that's the unit rate.