It would be C. The right one makes it look horrible compared to the other, if someone did not look at the graph.
Answer:
10h+8h= total number of bags
For The first question, the answer is 6.
For the 2nd question, the answer is 127
The solution is on the picture
Answer: B) 0 real roots
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The general rule is...
if D > 0, then you have two different real roots (see note below)
If D = 0, then you have exactly one real root
If D < 0, then you have no real roots (the two roots are imaginary/complex)
where D is the discriminant found by the formula
D = b^2 - 4ac
Note: If D is also a perfect square, then the two real roots are also rational. This assuming that a,b,c are rational.
Answer: 
Step-by-step explanation:
Use the pythagorean theorem to find z first.

a = 12
b = 6
c = z

z is greater than a and b