Hi guys can you guys answer this pls and explain plss​

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 +"

The price of an item has been reduced by 30%. the original price was $30. what is the price of the item now ?

Which number line represents the solution set for the inequality -1/2x> 24?