Find the solution set for the equation (x ^ 2 - 6x + 8)/(x - 2) + 5

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?

How much dextrose 70% must be mixed with dextrose 5% to prepare 1,000 ml of dextrose 20%?

If sr is 4.5cm and tr is 3cm, what is the measure in degrees of angle s?