Answer:
the graph of the parabola opens upwards.
Step-by-step explanation:
For any quadratic equation of the form
is true that:
if the main coefficient "a" is negative then the graph of the parabola opens downwards.
If the main coefficient "a" is positive, the parabola opens upwards
In this case the parabola is 
Note that 
and 
therefore the graph of the parabola opens upwards.
Answer:
22
Step-by-step explanation:
The ratio tells us 2/5 of the swimmers are indoor swimmers.
55(2/5)=22
Answer:
(0,0) (3,2) and (-2,-2) (4,2)
Step-by-step explanation:
To find the slope, you do 
, which would work for both.
2-0/3-0=2/3
2-(-2)/4-(-2)=2+2/4+6=2/3
12 hours..........
+ - = 1
Multiply by 12 to clear the fractions
3t + 2t - 4t = 12
t = 12 hrs to fill the pool
