Please answer correctly

a = 155 degrees

Step-by-step explanation:

A straight line is equal to 180 degrees.

25 + a = 180

   Subtract 25 from both sides.

a = 155

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step-by-step explanation:

1699/ 8548

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