A taxi driver charges $3 for every kilometre driven, plus $4 per trip. Which of these could be used to give the cost of an m kilometre trip?
m + 4 + 3
m x 4 x 3
mx (4 + 3)
m x 4 + 3
m x 3 + 4

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