PLEASE CAN YOU HELP ME WITH THIS AND EXPLAIN

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

Find the area of a parallelogram with base 15 yards and height 21 2/3

Thompson and thompson is a steel bolts manufacturing company. their current steel bolts have a mean diameter of 127 millimeters, and a variance of 36. if a random sample of 35 steel bolts is selected, what is the probability that the sample mean would differ from the population mean by greater than 0.5 millimeters? round your answer to four decimal places.