6th grade math help me pleasee:(

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 +"

Michael is training for a marathon. in his first week he plans to run 8miles. what path should he take

Which steps could be part of the process in algebraically solving the system of equations, y+5x=x^2+10 and y=4x-10