PLZ HELP ME WITH THIS IT DUE TODAY and explain 1 is the first image question

2 is second image question

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 +"

Idon't get undoing if its pass adding and subtracting so can someone ? x-2 over 5 = 18

How does the graph of y = 3x compare to the graph of y = 3-x?