Need help with exam questions please

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 +"

Which of the following represents the range of the graph of f(x) below

Express -5 2/5 as an improper fraction.