4-5h verbal expression

Lines p and q intersect. find the value of b. show your work. cite any theorems you use.

The parabola x = y² - 9 opens: a.)up b.)down c.) right d.)left

Scrub a dub toothbrushes are $4.00 each. there is a 10% discount, but there is also a 6% sales tax after the discount is applied. what is the new price after tax? round to the nearest penny