Answer:
The equation is 
Step-by-step explanation:
Let the quadratic function be

The point (-4,9) must satisfy this function,


The point (0,-7) must also satisfy this function,


The point (1,-1) must also satisfy this function,


We put equation 2 into equation 1 to get;



We again put equation 2 into equation 3 to get;


We add equation 5 and 6 to get;


We put
into equation 6 to get;



The equation is therefore 
Answer:
D
Step-by-step explanation:
We will let d represent the amount of dimes Angela has.
Angel has 5 fewer quarters than twice the number of dimes.
Twice the number of dimes will be 2d.
Then, 5 fewer will yield 2d-5.
Therefore, the amount of quarters Angela has is 2d-5.
Then, the total amount of coins (dimes and quarters) together, will be:

The first part is the amount of dimes.
And the second part is, as we determined, the amount of quarters.
Therefore, our answer is D.
Answer:
|x| always equals a positive number so the number in between the absolute value can be a positive number or a negative number. So the answer is -2 or 2.
Step-by-step explanation:
B. Multiplied each side by 12