- Given P(
x) =x^2+7x+c and P(-3)=3, find c.

If I were to do this i would sub in -3 forxso...

3=-3^2+(7x3)+c

3 = 9+21+c

3 = 30+c

c=-27

But im not sure if this is right?

Also

I am a little stuck with this one and unsure how to approach it??

- for the linear function
f. It is known thatf(1)=1 andf(-2)=-8. Find the function rule.