Marissa's claim was accurate. the average of these minute counts is 6 minutes, which is what Marissa claimed.
Answer:
it can have both depending if it goes up or down
Step-by-step explanation:
The rule, letting d=discriminant:
d>0, two real solutions
d=0, one real solution
d<0, no real solution (but there are two imaginary solutions)
So if it has only one real solution, the discriminant is equal to zero.
13.2 gallons hope this helped!