Hello,
Part A:

Part B:
x² coefficient is 4 >0 thus a minimun
as y=4(x+1)²-9 : vertex is (-1,-9)
Proof: see picture
Sorry for Part c: I don't know
In France, we make an array of (x,f(x)) and then plot the severals points.
Answer:
70,560
Step-by-step explanation:
You will need 6 coins of 5
and 2 coins of 1
hope it helps
=) = )
Ok and see if it is linear
I don't understand like what