Answer:
They will need to hire 5 testers.
Step-by-step explanation:
This question can be solved using a simple rule of three.
For each 10 developers, we need 2.5 testers. So how many testers are needed for 20 developers?
10 developers - 2.5 testers
20 developers - x testes
They will need to hire 5 testers.
To solve this problem, we need to start with the parent function of the exponential function, which is , where
is the base. In our problem,
, so our parent function here is
. Then, we need to perform some transformations to our parent function. Thus:
1. Vertical shrink:
A vertical shrink is a nonrigid transformation because the graph of the function get a distortion in the shape, so this transformation is as follows:
where in this problem equals 0.25 because:
2. Vertical shift:
The graph of the function get a vertical shift given by:
So the graph is shifted 3 units up. So the result is the graph shown above.