31% of workers in the US are college graduates. You randomly select 50 workers and ask each if they graduated from college. What is the probability that at most 20 workers are college graduate.

4+6x-3x^3 in standard form with explanations because i don’t understand

Hillel is juggling flaming torches to raise money for charity. his initial appearance raises $500\$500 $500 , and he raises $15\$15 $15 for each minute of juggling performance. the amount rr r of money hillel raises is a function of tt t , the length of his performance in minutes. write the function's formula.

Question 13 (1 point) jerome is starting a new job. his contract states he will earn $42,000 the first year, and will get a 4% raise per year. which function s(x) represents jerome's salary after a certain number of years, x?