Answer:
12 minutes
Step-by-step explanation:
Since it takes 4 minutes to fill the bathtub with both taps on and stopper is in then for each minute the 2 taps can fill up to a quarter (1/4) of the tub:
Similarly, it takes 6 minutes to drain the tub with both taps off and the stopper is out. This means for each minute the stopper can drain one sixth (1/6) of the tub.
Therefore, when both taps are on and the stopper is out, then for each minutes, the amount of water remaining in the tub is the water flowing in minus the water draining out

So for each minute, one twelveth of the tub is filled, for the tub to be completely filled in, it would take 12 minutes
Answer: A. 37 feet
Step-by-step explanation:
1. You can find the x value of the vertex of the parabola as following:

2. Substitute values:
a=-16
b=45

3. Substitute the vaue obtained into the equation given in the problem. Therefore, you obtain the following result:

4. To the nearest foot:

Answer:
Go to the search bar and type up photos. Press on the photo/screenshot you want and it should give you a button you can use to crop.
Step-by-step explanation:
-7d > 21
d < -3
Remember the sign flips when you multiply or divide by a negative number.