For 19 - 23, classify the given triangles by their angles (acute, right, or obtuse) and by their sides (scalene, isosceles, or equilateral).
19.30°, 60°, 90°
19.
20. 369, 72, 72°
20.
21.32, 409, 108
21.
22. 3 in, 4 in, 5 in
22
23. 8 in, 8 in, 12 in
23

answer: 94

step-by-step explanation: 79+91+92+94+94 = 450 divided by 5 (since there are 5 number that are being added) = 90

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

the answer is b