5. A large arch is being proposed to be constructed in downtown Los Angeles. The shape of the arch resembles the graph of the function f(x) = -0.022x2 +6.04x + 0.038
Which statement best describes the shape of the arch?
(a) An upward facing wide parabola
(b) An upward facing narrow parabola
(c) A downward facing wide parabola
(d) A downward facing narrow parabola

Nthe opening scene of the movie raiders of the lost ark, indiana jones replaces a golden statue with a bag of sand. the platform on which the statue is placed is designed to detect the mass of the statue. if the bag of sand has a different mass than the statue, then a mechanism triggers and destruction ensues. the density of gold is about 20\text{ g/cm}^320 g/cm 3 20, space, g, slash, c, m, start superscript, 3, end superscript. the density of sand can be estimated at 2.5\text{ g/cm}^32.5 g/cm 3 2, point, 5, space, g, slash, c, m, start superscript, 3, end superscript. the gold statue can be modeled as a cylinder with height 25\text{ cm}25 cm25, space, c, m and radius 8\text{ cm}8 cm8, space, c, m. in terms of \piπpi, what is the mass of sand indiana jones needs to avoid triggering the mechanism?