Please help asap i’ll mark brainlist if correct

#12 find the value of x. #13 find the value of the variable.

If you answer right ill give brainliest, : )

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 +"