Answer with explanation:
Presume that, initial water level to be, 0 mm, at a time t=0.
And water level is rising at the rate of
.
After 6.2 years level of water will be =1.8 × 6.2
=11.16 mm
→Averge, that is increase in water level after 6.2 years is given by

→→Rate of Depreciating of water level is given by = Negative of Increase of water level=
A = 0.1
B = 50.9
These are rounded to the nearest tenth
There ya go! The answer is 8 rows. Added a picture to show you my work :)
8 dollars per hour because 92-20=72. That the allowance you earn per week. After that you divide 72/9 because you work 9 hours to get to 72 dollars.
Using an online calculator, you can determine that the missing factor is:
(3x - 1)