Help needed ASAP will give BRAINLIEST

The parabola x= √y-9 opens: a.)up b.)down c.)right d.)left

What is the number 321,000,000 in scientific notation? also what is the number? ?

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?