Time T = k/W where k = the proportionality constant and W = number of workers
Find k k = TW = 36(11) = 396
So,
T = 396/6= 66 minutes
Therefore, it would take 66 minutes for 6 workers.
I'm guessing this is a question about interest rates? If you have $20 that increases by 4% in one year, you need to multiply 20 by 1.04. This gets you $20.8.
If you are talking about compound interest, we will take this number and multiply it again by 1.04 for the second year. 20.8 x 1.04 = $21.632.
If it is instead simple interest, we will simply add another .8 dollars for each year, instead of getting 4% interest compounded every year onto the new value. This gets you $21.6.
-1, as that’s where the parabola mirrors.