Factor the expression. 49b^2 – 36

a. (7b – 6)(7b – 6)

b. (7b 6)(7b 6)

c. (6b 7)(6b – 7)

d. (7b 6)(7b – 6)

The diameter of a bacteria colony that doubles every hour is represented by the graph below. what is the diameter of the bacteria after 8 hours? graph of a curve passing through the points zero comma 1, one comma two, two comma four, and three comma eight