For this discussion board, you will choose something in the real world that varies periodically (or approximately so). Examples could be: the price of heating oil over the course of the year, the population of mosquitoes or some other seasonal insect, the number of people in a 24-hour restaurant over the course of a day.

Part 1: Post Your Response:
Do some research on your chosen topic and answer the following questions:
-What is the (typical) maximum of your chosen function, and when does it occur?
-What is the (typical) minimum of your chosen function, and when does it occur?
-What are the approximate period and amplitude of your function?
-What does this tell you or what conclusions can you draw from your findings?

use an equation of ratios to determine the amount of gas needed to fill the tank.

    0.2             0.8

  =    

288.75             x

                                                              231 gal

so, 0.2x = (0.8)(288.75 gal), and x = = 1155 gal.

                                                                0.2

it would take 1155 gal. to fill the tank.

the cost would be

1155 gal         $3

* = $3465   (answer)

      1           1 gal

hope this you

walter needs to make at least 5 more cookies but no more than 40. 5 ≤ x ≤ 40

step-by-step explanation:

20 ≤ x + 15 ≤ 55

subtract 15 from all parts

20-15 ≤ x + 15-15 ≤ 55-15

5 ≤ x ≤ 40

this means how many more cookies he has to make

walter needs to make at least 5 more cookies, but no more than 40 cookies; 5 ≤ x ≤ 40

there would be 162.15 calories in this cereal.

step-by-step explanation:

b.   e = 7.5h

hope this , lovely!