A bag contains yellow marbles and red marbles, 47 in total. The number of yellow marbles is 7 less than 5 times the number of red marbles. How many yellow marbles are there?

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