The formula for finding the area of a square that has a side length, s, is A = s2. If a square has an area of 40 square units, what is the length of a side? A 2 times the square root of 10 B 10 square root of 2 C 20​

Plz help plz give me the answer

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.

Jacob signs up to work for 2 1/2 hours at the school carnival. if each work shift is 3/4 hour, how many shifts will jacob work? (i just want to double check : |, for anybody that responds! : )