Answer:
The lake will be 1879.776 fts deep in six weeks.
Step-by-step explanation:
The depth of the lake as the weeks passes is given by the equation y = 321*(0.976)*x. So if we need to find the depth of the lake in six weeks, we have to attribute that value to x and solve the equation, as seen bellow:
y = 321*(0.976)*x = 321*(0.976)*6 = 1879.776 fts
The lake will be 1879.776 fts deep in six weeks.