the average temperature on the dark side of the moon is -184. the average temperature of Callisto, one of Jupiter's moons, is -139. How much warmer is Callisto than the dark side of the moon?

If y varies directly as x2 and y=6 when x=6, find the constant of variation.

:24% of students in a class are girls. if there are less than 30 students in this class, how many students are there? how many girls are there?

Three people are traveling and need to exchange the currency of their native country for the currency of the country they are visiting. drag each exchange to the category that shows the ratio of currencies in that exchange.