Logan bought 15 balloons. four fifths of the balloons are purple. how many of the balloons are purple?

If i have 20$ and i gave 5$ away how much i got

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?

If tan2a=cot(a+60), find the value of a, where 2a is an acute angle