A convenience store sells two brands of orange juice. Brand a contains 8 fluid ounces and cost $1.58. Brand B contains 12 fluid ounces and cost $1.98. Which brand cost less per ounces

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

Icould really use some with this question.

Aculture started with 2,000 bacteria. after 8 hours, it grew to 2,400 bacteria. predict how many bacteria will be present after 19 hours . round your answer to the nearest whole number. p=ae^kt