A beach shop pays $11.40 for each beach umbrella. The shop’s percent of markup is 75%. Find the markup

What is the least common factor of 6 and 8

Offering 30 if a plus b plus c equals 68 and ab plus bc plus ca equals 1121, where a, b, and c are all prime numbers, find the value of abc. the answer is 1978 but i need an explanation on how to get that.

If sin(x) = 0 and cos(x) = 1, what is tan(x)?