what is the value of this

Use set buikder notation to represent the following set: {, -2, -1, 0}

Issof claims that the scale factor is 1/2. which statement about his claim is correct

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 +"