A coin contains 9 grams of nickel and 16 grams of copper, for a total weight of
25 grams.
What percentage of the metal in the coin is copper?

At the school fair, grade 3 raises 84 more then grade 4. grade 4 raises 112 more then grade 2. grade 3 raises 360. how many dollars does grade.2 have

How do i multiply two digit numbers

Which of the following circles have their centers on the x-axis? check all that apply.