Help me with a and b 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 +"

Solve this equation using substitution. {4x + y = −2} {4x + 6y = 44}

Consider that lines b and c are parallel. what is the value of x? what is the measure of the smaller angle?