Answer:
I believe the answer is 26.I got it because you start of doing 13 times 4 which gives you 52 then you divide it by 2 or multiply by a half (1/2) and you get 26.
Part À: x=0 because anything to the zeroth power is one, so the only answer would be 0.
Part B: x=1 OR 0 because we know 5^0 is one, and one to the first power is just one too. One to the zeroth power is also one.
The parabola opens up as the largest term has a positive leading co-efficent