First set everything to 0.

Giving you A= 1 , B= 1 and C= -5
Then input everything into the quadratic formula and either solve by hand or use a calculator.
Note exact values are found by hand, decimals are found using a calculator.
Answer:
-3, 7
Step-by-step explanation:
because you take how much from the first coordinate to the second and add it too the second
Answer:2.744
Step-by-step explanation:
<span>Mean Absolute Deviation (MAD): 6</span>
Answer:
k+27=180(co-interior angle)
k=180-27=153°