1 and 19, 19 is a prime number.
Compute the unit rates.
Tank A:
(5/8 gal) / (1/2 min) = 10/8 gal/min = 5/4 gal/min = 1.25 gal/min
Tank B:
(3/5 gal) / (1/4 min) = 12/5 gal/min = 2.2 gal/min
So tank B is filling faster.
A function will not have any repeating x values. They can have repeating y values, just not the x ones. So u need to find the set of points that has all different x values...and that is ur function.
{(0,1), (-2,8), (5,19), (2,8)}....this has no repeating x values and is therefore, a function
Maybe the answer is -4 ....? I just can't find any more logic to this problem.
Total number of hours = 15
Let the hours spent tutoring french be x.
Therefore hours spent on scooping ice cream = (15 - x)
Amount: Tutoring french is $15 an hour, total for x hours = 15x
For scooping ice cream it is $10 an hour 10*(15 - x) = 150 - 10x
To make more than $180
15x + (150 - 10x) > 180
15x + 150 - 10x > 180
15x - 10x > 180 - 150
5x > 30
x > 30/5