Melissa bought a sofa on sale for $630. This price was 28% less than the original price. What was the original price?

Express the following as a function of a single angle, cos(60) cos(-20) - sin(60) sin(-20)

Tom wants to order tickets online so that he and three of his friends can go to a water park the cost of the tickets is 16.00 per person there is also a 2.50 one-time service fee for ordering tickets online write an expression in term of n that represents the cost for n ordering tickets online

What is the order of these fractions from least to greatest 2/3 7/10 5/8 65/100