Answer:
The system of equations is
Step-by-step explanation:
Let
x ----> the number of minutes of calling time
y ----> the monthly cost of the calling plan
we know that
The linear equation in slope intercept form is equal to
where
m is the slope
b is the y-intercept
In this problem
Plan A
substitute
----> equation A
Plan B
substitute
----> equation B
therefore
The system of equations is
Let
x-------> the number of persons in the family
f(x)------> the function represent the cost of living
we know that
The domain of the function would only include positive integers, because the number of persons can not be negative or a fraction
The range of the function would only include positive numbers, because the cost can not be negative
therefore
<u>the answer is the option B</u>
The domain would only include positive integers.
Answer:
225 dollars
Step-by-step explanation:
If a dozen eggs are 300 dollars altogether and, there are 12 eggs in a dozen you divide 300 by 12, to get the price of each egg individually, which would be 25 dollars per egg...
Then you multiply 25 times 9...
which would equal 225...
so, 9 eggs would be 225 dollars altogether!
