The water level at a local pier rises and falls with the tide. Yesterday, the maximum depth of the water at the pier was 8 feet, and the minimum depth was 4 feet. High tide occurred at 12:00 AM and low tide
occurred at 12:20 pm. Which function models the depth, in feet, of the water at the pier yesterday, as a
function of time t in minutes past high tide?
a(t) = 2 cos( 0) + 6
d(t) = 4 sino) + 6
d(t) – 2 cos( 0) + 6
d(t) = 2 sin(0) + 6
Done