1) -13 = -4a - 2b + c
-13 = -2(2a + b) + c
2) 3 = 4a + 2b +c
3 = 2(2a + b) + c
3) 5 = 16a + 4b + c
5 = 4(4a + b) + c
[ Final Answers are in bold ]
Hope this helps!
Given:
The quadratic function is:

To find:
The zeros of the given quadratic function.
Solution:
We have,

Splitting the middle term, we get



For zeros,
.


Therefore, the correct option is (b).
2-3 feet would be a reasonable answer<span />
Answer:
when x=30, y = -21
Step-by-step explanation:
x = k/y
x = 42 y = -15
x = k/y
42 = k/-15
Cross product
42 * -15 = k
-630 = k
k = - 630
Find y when x=30
x = k/y
30 = -630/y
Cross product
30 * y = - 630
30y = - 630
y = - 630/30
y = -21
when x=30, y = -21