In a certain chemical, the ratio of zinc to copper is 3 to 17. a jar of the chemical contains 646 grams of copper. how many grams of zinc does it contain?

Write an equation for the function that includes the points (1,4/5) and (2,2/3)

Abacteria population is tripling every hour. by what factor does the population change in 1/2 hour? select all that apply

You just purchased two coins at a price of $670 each. because one of the coins is more collectible, you believe that its value will increase at a rate of 7.1 percent per year, while you believe the second coin will only increase at 6.5 percent per year. if you are correct, how much more will the first coin be worth in 15 years?