A research team aboard an underwater research vessel descends 800 feet below sea level. They then rise 480 feet before descendin
g again 240 feet. What is their depth now? A) 80 feet below sea level B) 560 feet below sea level C) 1,040 feet below sea level D) 1,520 feet below sea level
Given the function f(x) = (x + 1)^2 - 3, we recognize that because of the x^2 factor we have a parabola that opens up. Its vertex is (-1, -3), which I have swiped from the given equation. The axis of symm is x= -1.
