An online clothing company sells custom sweatshirts. The company charges ​$4.00 for shipping plus ​$8.00 for each sweatshirt. Write a linear function rule that models the total cost y​ (in dollars) for any number of sweatshirts x. Describe how the linear function rule would change if the shipping charge applied to each sweatshirt

Step-by-step explanation:

Starting at sea level, a submarine descended at a constant rate to a depth of −4/5 mile relative to sea level in 3 minutes.

Total time = 3 minutes

" alt="\texttt{Total depth descended in 3 minutes = }-\frac{4}{5}miles" />" />

We need to find what was the submarine's depth relative to sea level after the first minute,