The amount of light passing through each foot the water in the lake = 100% - 60% = 40%
The percent of light passing through 5 feet of water = 0.4^5 = 0.01024 = 1.02%
So in a cube, the width, length, and height are the same. Therefore, you have to find the cube root of 15.625 which is 2.5 and so the side length is 2.5
Answer:

Step-by-step explanation:
we know that
The equation of the line in slope intercept form is equal to

Step 1
Find the slope m
Let


Step 2
Find the value of b
we have


substitute in the equation of the line



The equation in slope intercept form is equal to

Let the number of hours she work be n
So the equation will be
P = 9n