In a rectangle has vertices (3,7), (15,7), (3,-2), and (15,-2), then the length of diagonal is?

If there are 12 moths and some have 31 days and others have 30 days how many have 28 days?

The equation x2 – 1x – 90 = 0 has solutions {a, b}. what is a + b?

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