A.)23
B.)30
C.)53
D.)60

m∠ABC = 150°

Step-by-step explanation:

180° - 90° = 90°

90° + 60° = 150°

c.

step-by-step explanation:

substitution for (0,1)

y=x^2+4x+1

1=0^2+4(x)0+1

1=0+4(x)0+1

1=4(x)0+1

1=0+1

1=1

substitution for (-3,-2)

y=x+1

-2=-3+1

-2=-2