Tom runs a marathon (26.2 miles) in 4 hours and 12 minutes. How many miles per hour does he run? Without calculating the answer, from the choices given, which is most reasonable?
A 12 kilometers per hour
B. 6 miles per hour
0. 3 miles per hour
D 20 miles per hour

You are at a restaurant and owe $38 for your meal. you want to leave a 20% tip. how much will your tip be?

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?

(-y to the power of 2 - 4y- to the power of 2 -6 y +3)