Need help ASAP plz

22.8 ft. squared

Step-by-step explanation:

5.7 x 8 = 45.6 ÷ 2 = 22.8

area of a triangle = base x height ÷ 2

b. hannah is playing with her cousin at

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