I need the CORRECT ANSWER!

step-by-step explanation:

circumference divided by 3.141592654 then timesthe radius twice

first one because it can't have a fraction in it

step-by-step explanation:

you save $70

discount would be 35% off

step-by-step explanation:

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