Which is the best estimate for 6.3×10 to the second power times 9.9×10 to the 3rd power written in scientific notation

Acomputer store bought a program at a cost of $10 and sold it for $13. find the percent markup

The function below show how much jayna and hannah charge for babysitting. which statement best compares the two plants?

The numbers on a football field indicate 10 yard increments. you walk around the perimeter of a football field between the pylons. you walk a distance of 30623 yards. find the area and perimeter of the indicated regions. write your answers as mixed numbers, if necessary. a. one end zone: perimeter: yd area: yd2 b. the playing field (not including end zones): perimeter: yd area: yd2 c. the playing field (including end zones): perimeter: yd area: yd2