How much is 5280 feet of oil in this pipeline worth if the value of crude oil is $100 per barrel

The parabola y = x² - 4 opens: a.) up b.) down c.) right d.) left

To solve the system of equations below, pedro isolated the variable y in the first equation and then substituted it into the second equation. what was the resulting equation? { 5y=10x {x^2+y^2=36

Write an equation of the line that passes through the point (2, 3) and is perpendicular to the line x = -1. a) y = 1 b) y = 3 c) y = 0 eliminate d) y = -3