Since she only has 8 apples and she ate 3 of 8, she ate 3 apples.
Answer: 
Step-by-step explanation:
1. You have the following information:
- The lenght of
is 2 centimeters.
- The angle m∠S=80°.
- Cos80°=0.17
2. Therefore, you can calculate the lenght of the segment
as following:


3. Substitute values and solve for
:

4. To the nearest tenth:

The graph of

is shown in the graph below.
The graph is of ∩-shape when the constant

of the quadratic equation

is negative