Min works in the kitchen of a catering company. today her job is to cut
out whole pita bread into smal triangles. min uses a cutting machine,
so every pita tangle comes out the same. the figure shows an
example mn has been told to cut 3 pita triangles for every guest
there will be 250 guests. if the pita bread she uses comes in
squares with 20 centimeter sides and she doesn't waste any
bread, how many squares of whole pita bread will min have to cut up?

See picture.

Step-by-step explanation:

A cosine function is a wave which starts up at its max value on the y-axis. Here the max is 20 so the cosine graph will start at 20 on the y-axis.

It descends into its valley settling at its lowest point the minimum value. Here it is 0.

The number of times it does this within a cycle is the coefficient of the variable inside the function. This results in the period or length of one cycle. The period is found by dividing 2π by that coefficient. Here the period is 5. So 2π/x = 5, x = 1.256 will be the coefficient. This means between 0 and 2π, it completes 1.256 cycles.

Look for a graph with maximum 20 on the y-axis and minimum 0 that cycles through about 1.256 between 0 and 6.28. See attached picture.