The depth of a river at a certain point is modeled by the function W defined above, where W(t) is measured in feet and time t is measured in hours.
(A) Find W′(8) . Using correct units, explain the meaning of W′(8) in the context of the problem.
(B)The graph of W is concave down for 3≤t≤3.5 . Use the line tangent to the graph of W at t=3 to show that W(3.5)≤9
(C) in picture.

costs the what? what is the cost of the pants?

step-by-step explanation:

if it is $10, then the price is 14.

take 40% of the cost, and then add the cost.

40% of 10 = 4

4+10 = 14.

answer: 2 answers

step-by-step explanation: the first one means to spread the product throughout the marketplace such that a large number of people can buy it.  

the second means the process of making a product or service available for the consumer or business user that needs it.

mark this brainliest and i will be glad to .

18.8cm hope i at all

step-by-step explanation:

yeah i know the problem you need. i am taking it right now. the answer is step 3

~mickey