Victoria's method is linear because the number of minutes increase by an equal number (15) every month.
Workings in the attachments below. The green line is the function that has been set up for Victoria. The lines that form a curved looking graph belong to the function that was set up for Zach.
Answer:
x=-11
Step-by-step explanation:
5x+2=4x-9
5x-4x=-9-2
x=-11
Using FOIL, we multiply by the first polynomial to the other one in the parentheses. x times x is x^2. Now we have to multiply x by 2/3, which is 2/3x. Now we have to go to 4/3. We multiply 4/3 by the first polynomial in the other parentheses. 4/3 times x is 4/3 x. We then multiply 4/3 to the last polynomial in the other parenthesis. 4/3 times 2/3 is 8/9. Now, we add our terms. x^2 + 2/3x + 4/3x + 8/9. We can add 2/3x with 4/3x so we can simplify. 4/3+2/3= 6/3=2x. So our final answer will be x^2 + 2x + 8/9.
If two or more points have the same domain or x value, then it is not a function because points cannot have identical x values, only y values.
With this in mind, C is not a function because there are two 4s in the domain.
The answer here is d ,just substitute x=-2 and y=-4 in every equation
