Airports are identified with 3-letter codes. for example, the richmond, virginia airport has the code ric, and portland, oregon has pdx. how many different 3-letter codes are possible?

Ateacher noticed 5/8 of the students were wearing either blue shorts or white shorts. write two different ways this could be done.

Which situation can be modeled by the inequality 5 + 10w ≥ 45? a. you start with $5 and save $10 a week until you have at least $45. b.you start with 5 baseball cards and purchase 10 cards every week until you have at most 45 cards. c.you start with 5 water bottles and purchases cases of 10 water bottles each until you have a total of 45 water bottles. d.you spend $5 plus $10 per week until you have less than $45.

Select the conic section that represents the equation. 3x2 + 3y2 -2x + 4 = 0