It is solution c. You substitute ABC for DEF.
1) We can determine by the table of values whether a function is a quadratic one by considering this example:
x | y 1st difference 2nd difference
0 0 3 -0 = 3 7-3 = 4
1 3 10 -3 = 7 11 -7 = 4
2 10 21 -10 =11 15 -11 = 4
3 21 36-21 = 15 19-5 = 4
4 36 55-36= 19
5 55
2) Let's subtract the values of y this way:
3 -0 = 3
10 -3 = 7
21 -10 = 11
36 -21 = 15
55 -36 = 19
Now let's subtract the differences we've just found:
7 -3 = 4
11-7 = 4
15-11 = 4
19-15 = 4
So, if the "second difference" is constant (same result) then it means we have a quadratic function just by analyzing the table.
3) Hence, we can determine if this is a quadratic relation calculating the second difference of the y-values if the second difference yields the same value. The graph must be a parabola and the highest coefficient must be 2
Answer:
4.5
Step-by-step explanation:
The Vertex is the pinnacle of a given parabola, it is also represented as the maximum or minimum value value.
The Equation given is "<span>y=-x^2-2x-5"
The vertex for this parabola is located at (-1,-4).
-I hope this is the answer you are looking for, feel free to post your questions here on brainly in the future. </span>
Answer: Your average would be about 41 dollars
Step-by-step explanation:
Why because if you add up all of the costs and round it, the answer is 41
