Which is the sum of 3.15 × 107 + 9.3 × 106? write your answer in scientific notation.

The perimiter of a rectangle is 70 inches the legneth of the rectangle is 5 less than 3 times the width of the rectangle what is the width of the rectangle

Hurry if the population of of an ant hill doubles every 10 days and there are currently 100 ants living in the ant hill what will the ant population be in 20 days

Arepresentative from plan 1 wants to use the graph below to sell health plans for his company how might the graph be redrawn to emphasize the difference between the cost per doctor visit for each of the three plans?