Answer:
A) (-9/7,0), (3/8,0)
Step-by-step explanation:
Zeros of a quadratic function:
x for which y = 0.
In this question:

It's 0 if one of the factors is 0. 6 is never 0, now about the other to:



So (-9/7, 0) is a zero of the quadratic function.
The other is:



(3/8,0) is the other zero.
Thus, the correct answer is given by option A.
Answer:
2
Step-by-step explanation:
The range of class A is 5-0 = 5
The range of class B is 3-0 = 3
the difference between 3 and 5 is 2.