Ineed for the questions 7-9 i need the extra credit to pass

Define multiplicative inverse. give an example of a number and its multiplicative inverse.

The volume, v, of a rectangular prism is determined using the formula, where / is the length, w is the width, and his theheight of the prism. carltren solves for w and writes the equivalent equation w=using this formula, what is the width of a rectangular prism that has a volume of 138.24 cubic inches, a height of 9.6 inches,and a length of 3.2 inches?

Use pascal's triangle to find the missing values. x4 - 4xb + 6x2 - ax + 1