ANSWER:

STEP-BY-STEP EXPLANATION:
Rational numbers are all numbers that can be expressed as a fraction, that is, as the quotient of two whole numbers.
Therefore, an example would be:
Sofia can spend at most $20.83 each week.
Step-by-step explanation:
Given,
Amount of given by Sofia's parent = $125
Number of weeks = 6
Let,
x represent the amount that Sofia can spend each week.
As Sofia has $125, therefore, she can spend maximum $125 or less than that.

Dividing both sides by 6

Sofia can spend at most $20.83 each week.
Keywords: inequality, division
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Google it that’s what I will don
Answer:

Step-by-step explanation:
Using the general equation
, we already know that
and
, but we need to find
from the period:

Hence, the cosine function is 
-The decimal is .66 repeated
- This is a proper fraction, meaning it doesn't have a whole number next to it.
- This isn't a whole number