Volunteers at Sam's school use some of the student council's savings for a special project. They buy 3 backpacks for $4 each and fill each backpack with paper and pens that cost $4. By how much did the
student council's savings change because of this project?
The savings was changed by
dollars.

Is a positive integer raised to a negative power always positive

Abag contains 10 white golf balls and 6 striped golf balls. a golfer wants to add 112 golf balls to the bag. he wants the ratio of white to striped gold balls to remain the same. how many of each should he add?

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? the scale on the y-axis could be changed to 0–100. the scale on the y-axis could be changed to 25–40. the interval of the y-axis could be changed to count by 5s. the interval of the y-axis could be changed to count by 20s.