Question

The number of cells in a lab sample triples every 4 hours. Write an expression to represent the number of cells after 24 hours.

I think it might be x cubed times 6

Answer 1

Nope. It triples every 4 hours, so in 24 hours it has tripled 6 times:

x * 3*3*3*3*3*3 = x * 3^6

Answer 2

C*3^6

Answer 3

So if we know C triples write there that C^3 every 4 hours it triples again so we know by mental math 24 by 4 is 6 so put that in an expression
C^3*6 *= Times ^= to the power of