The average daily high temperature in Madrid peaks at 92°F in the summer and drops as low as 33°F in the winter. The temperature can be modeled by T(d) = 29.5 cos (d-204) +62.5, where d represents the day number of the -204) year (January 1 is 1, January 2 is 2, and so on). How many days during the year is the high temperature expected to be 75°F or above? 73
106
131
139

the required function is .

step-by-step explanation:

from the given table it is noticed that the graph passing through (-3,7), (0,4), (3,1) and (8,-4).

it is a linear function because the value of y is decrease by one as the value of x increase by 1.

the slope of the function is

the slope of the function is -1 and the y-intercept is 4.

the slope intercept form is

where, m is slope and b is y-intercept.

therefore the required function is . the graph of this function is shown below.

the monthly balance will be $75,000