BRANLIEST TO CORRECT ANSWER GOOD LUCK 3. Erik has been collecting comic books for
the past few years. The number of total
comic books in his collection each year is
as follows.

• 30 comic books the first year
• 60 comic books the second year
• 90 comic books the third year
• 120 comic books the fourth year

What function represents the number of
comic books as a function of the number of
years, t.
a. f(t) = 30t
b. f(t) = 30t+60
C. f(t) = 15x2 to the power of t
d. f(t) = 30.2 to the power of t-1

In one day there are too high tides into low tides and equally spaced intervals the high tide is observed to be 6 feet above the average sea level after six hours passed a low tide occurs at 6 feet below the average sea level in this task you will model this occurrence using a trigonometric function by using x as a measurement of time assume the first high tide occurs at x=0. a. what are the independent and dependent variables? b. determine these key features of the function that models the tide: 1.amplitude 2.period 3.frequency 4.midline 5.vertical shift 6.phase shift c. create a trigonometric function that models the ocean tide for a period of 12 hours. d.what is the height of the tide after 93 hours?