2+2 THIS IS A LIFE OR DEATH QUESTION PLZZ

In simplified exponential notation, the expression a^2•a^-3•a 1/a 0

Iwill give brainliest only if your correct the words subsequent and submerge both contain the prefix sub. based on this information, what does the prefix sub most likely mean? a) under or secondary b) true or verifiable c) tricky or difficult d) around or centered on

Amachine part consists of a half sphere and a cylinder, as shown in the figure. the total volume of the part is π cubic inches.