The size of a small ant is about 0.002 meters, which can be written as 2 x 10" meters. What is n?
А. 2
В. -3
С. 3
D. -2
Please help and thank you!

Volume of cylinder with a radius of 8cm and height of 25 cm

Pyotr tchaikovsky sporting goods operates on a 45% overhead based on the selling price, which results in an overhead of $65.34 on the newest version of an air hockey game set. if the air hockey game set costs pyotr tchaikovsky sports $49.32, find the selling price, the markup, and the net profit.

65% of students in your school participate in at least one after school activity. if there are 980 students in you school, how many do not participate in an after school activity?