On chris's birthday in 1992, he was half the age of his brother joseph. on chris' birthday in 1998, he was two-thirds the age of joseph. how old will chris be on his birthday in 2018?

What is the radius of a circle with an area of 78.5 cubic inches? use 3.14 for pie

Timmy uses 1 1 2 cups of sugar for every 2 gallons of lemonade he makes. how many cups of sugar would timmy use if he makes 13 gallons of lemonade?

Over the course of the school year, you keep track of how much snow falls on a given day and whether it was a snow day. your data indicates that of twenty-one days with less than three inches of snow, five were snow days, while of the eight days with more than three inches of snow, six were snow days. if all you know about a day is that it is snowing, what is the probability that it will be a snow day?