Answer:
y = 5x^2+10x +14
Step-by-step explanation:
y = 5(x+1)^2+9
= 5(x^2+2x+1)+9
= 5x^2+10x +14
2. Angle Addition Postulate as they are adding both angles
3. 60 + 40 = m <ABC because it's a substitution
4. 100 = m <ABC as it is simplified already
5. Definition of obtuse angle
121 x 12 = 1452 so over 1500 is not a correct estimate. Less than 1500 is the right estimate
For# 1 the answer would be
-3/5
for #2 the answer would be
3/4
i hope this helps :)
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