Eder needs 6 cookies and 2 brownies for every 4 plates he makes for a bake sale. how many cookies and brownies eder needs for 10 plates.

Which expression is equivalent to 5r6141 2r+st6

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?

Hi, can anyone show me how to do this problem? 100 points for this. in advance