2.) How much pure alcohol must be added to 150 ml of a 15% alcohol solution to obtain a 25 % alcohol solution?

Fa bus driver leaves her first stop by 7: 00 a. m., her route will take less than 37 minutes. if she leaves after 7: 00 a. m., she estimates that the same route will take no less than 42 minutes. which inequality represents the time it takes to drive the route, r?

The measure of an angle is 117°. what is the measure of a supplementary angle?

The function f(x) = 14,600(1.1)* represents the population of a town x years after it was established. what was the original population of the town?