Burt's burger barn sold 495 hamburgers today. the number sold with cheese was half the number sold without cheese. how many of each kind were sold?

If 90° < θ < 180° and cotθ = -1/3, then cscθ =

Write a function that matches the description. a cosine function has a maximum of 5 and a minimum value of -5. f (r) =

International calls require the use of a country code. many country codes a 3-digit numbers. country codes do not begin with a 0 or 1. there are no restrictions on the second and third digits. how many different 3-digit country codes are possible?