What led scientists to consider ceres a planet?
a) presence of water
b) it's spherical shape
c) its location in the asteroid belt
d) presence of volcanoes on it's surface

By the triangle inequality theorem, if two sides of a triangle have lengths of 3 and 7, what are all the possible lengths of the third side? a) 3 < x < 8 b) 3 < x < 7 c) 4 < x < 10 d) 5 < x < 7

Witch layer of the atmosphere has the most air pressure

Which of the following factors is not used to measure a country’s standard of living? a.) life expectancy b.)educational levels c.)divorce rates d.) gross income