Answer:
x^2+3x+2x+1 is meant to be x^2 +5x+1
the last one D)4.5298 l check in calculator it did not come correct but I say the last one
All we need to do is plug the numbers into the equation.
A:

Not A.
B:

Not B.
C:

C is the correct answer
I would say the answer is 95.9 not to sure but I’m pretty confident
Step-by-step explanation:
For the triangle on the bottom right the missing angle is
180- (74+50)= 56°
For the triangle on the bottom left the missing angle is
180- (45+80)= 55°
For the triangle in the middle the missing angle is
180- (54+51)= 75°
For the triangle on top the missing angle is
180- (80+54)= 46°
180- (74+51)= 55°
180- (46+55)= 79°