Answer:
1/3 of an hour
Step-by-step explanation:
Because we already have the same common denominator, subtract the numerators to solve:

Isa has 1/3 of an hour left to play video games (20 minutes).
Answer:
height of a cricket as it jumps
Step-by-step explanation:
this is the only thing that the value would drop over time
Answer:
(-6, 0) and (3, 0)
Step-by-step explanation:
I think you meant f(x) = (x + 6)(x - 3). This graph intersects the x-axis in two places: (-6, 0) and (3, 0). These are the "x-intercepts."
Recall that a relationship is a function ONLY IF for each input (x-) value there is exactly one corresponding y value. More than that? Then the relationship is not a function. That applies to the first and the third relations given here.
The second relationship is a function.