Dayshawn can choose two of his four t-shirts to take on a weekend trip. If the t-shirts are labeled A, B, C, and D, which choice represents the sample space, S, for the event?

Jabari is power washing houses for a summer job. for every job, he charges an initial fee plus $30 for each hour of work. his total fee for a 4 -hour job, for instance, is $170 . jabari's total fee,f, for a single job is a function of the number,t, of hours it takes him to complete the job. write the function's formula.

Find the zeros of each function. f(x) = 6x^2 - 7x - 20

The difference of two numbers is 40. find the numbers if 0.3 parts of one number is equal to 37.5% of the other one.