Write the equation for the perpendicular bisector of a segment that has endpoints (1, –4) and (3, 2).

A) y = –1∕3x – 1∕3

B) y = –3x + 5

C) y = –3x – 1

D) y = 3x + 5

Achemist has 200 ml of a 10% sucrose solution. she adds x ml of a 40% sucrose solution. the percent concentration, y, of the final mixture is given by the rational function: the chemist needs the concentration of the final mixture to be 30%. how many milliliters of the 40% solution should she add to the 10% solution to get this concentration?

What can you determine about the solutions of this system

Bob is putting books on a shelf and takes a break after filling 18 1/2 inches on the book shelf. the book shelf is now 2/3 full. how long is the entire bookshelf?