I think you're missing a bit of the question. If her savings can be modeled by x...?
Answer:
C
Step-by-step explanation:
My notes are in the picture.
it is a graph of the function given.
For this case we have the following functions:

We have to:
is given by:

Thus, the correct option is the option is A.
On the other hand,

Thus, the correct option is the option is A.
We also have:

Thus, the correct option is the option is B.
Last we have:

Thus, the correct option is the option is C.
ANswer:
Option A, A, B, C
Answer: 15.9
Step-by-step explanation:
'Percentage' is obtained by multiplying 2.45 by - 7%.
- 7% × 2.45 =
(- 7 ÷ 100) × 2.45 =
(- 7 × 2.45) ÷ 100 =
- 17.15 ÷ 100 =
- 0.1715 ≈
- 0.17;
<h2>How do we check the result?</h2>
If - 7% × 2.45 = - 0.1715 =>
Divide - 0.1715 by 2.45...
... And see if we get as a result: - 7%.
<h2>Note:</h2>
100/100 = 100 ÷ 100 = 100% = 1
Multiply a number by the fraction 100/100,
... and its value doesn't change.
n/100 = n%, any number.