4) You are visiting a beach, and the tides for the day of your visit are given by: Tt h(t) = 3+3 sin Where t is the time of day on a 24 hr clock (for example t = 17.5 means 5:30 pm), and h is the height of the water in feet. a. When are the two high tides for the day? b. Use differentials to approximate the height of the water if you arrive at the beach 3 minutes late for the high tide.

Equations and inequalities describe the relationship between two mathematical expressions.

A linear function can just be a constant, or it can be the constant multiplied with the variable like x or y. If the variables are of the form, x2, x1/2 or y2 it is not linear. The exponent over the variables should always be 1.