Riley has nickels, dimes and quarters in the ratio of 2:1:2. If 19 of Riley’s coins are dimes, how many nickels and quarter does Riley have?

Which number line represents the solution set for the inequality -1/2x> 24?

I'm at a bookstore with $\$35$ in my pocket and a $20\%$-off coupon. what is the cost of the most expensive book i can buy with my money and the coupon? (assume that there are books of every possible price in the bookstore. it's a large bookstore! )

Aquadrilateral has exactly 3 congruent sides davis claims that the figure must be a rectangle why is his claim incorrect.