Answer:
D. 81
Step-by-step explanation:
I am in the same class as you, I took the quiz and the answer was 81
Answer:
540
Step-by-step explanation:
divide 15 by 2.5 then multiply that answer by 90
Answer:
-3.14 is the answer to -pi
There is the graphing method, completing the square, factoring, and my favorite, the quadratic formula