The amount of daylight in a town can be modelled by the sinusoidal function d(t) = 4.37cos0.017t + 12.52 where d(t) represents the hours of daylight and t represents the number of days since June 20, 2012. June has 30 days, July has 31 days. How many hours of daylight should be expected on August 20, 2012?

a function could be identified in 3 ways either on a chart,graph, or ordered pairs. first a function is that each point has its own. the rule is that there can be many x's to one y but there can not be 2 x's at different y's. so on a graph when you put a straight line through the y's there should be one dot only to be a function.

step-by-step explanation:

853.3

step-by-step explanation:

1010: 3030

is it i think