How are your suppose to simplify 4y-y

What is a possible solutions of the x> 3?

11. a particular type of cell doubles in number every hour. which function can be used to find the number of cells present at the end of h hours if there are initially 4 of these cells? a. n = 4 ()" b. n = 4(2)" c. n = 4 + (2)" din = 4 +"

Solve the system of equations y= 3/2 - 1, -x+ y =-3