At a seaport, the depth of the water, h metres, at time t hours, during a certain day is given by h=3.1sin2 π(t-4)/12.4+6.7.
What is the maximum depth of the water?
A. 3.6m
B. 3.1m
C. 7.7m
D. 9.8m

it reflected because of the glass maube

step-by-step explanation:

4

step-by-step explanation:

or

step-by-step explanation:

we need to solve for 'x' the following equation:  

we have that:

⇒

⇒ ⇒

factorizing, we get that:

  ⇒

then, the solutions are: or

nothing extraneous has been found!

sounds & other waves originate from any vibrating object