Circles A, B, and C overlap. x is in the overlap of circles A and B.
Which of the following are true about x? Check all that apply.

Kelly is a salesperson at a shoe store, where she must sell a pre-set number of pairs of shoes each month. at the end of each work day the number of pairs of shoes that she has left to sell that month is given by the equation s=300-15x , where s is the number of pair of shoes kelly still needs to sell and x is the number of days she has worked that month. what is the meaning of the number 300 in this equation

Its worth 10000000 points need asap if you answer correctly ill mark brainliest

Find the cosine function that is represented in the graph.