Round 7,433,650 to nearest ten than hundred thousand than million

Neveah and clint are baking muffins for the bake sale. they need to bake 30 muffins for their display case. clint has baked 4 so far, and neveah has baked 7. how many muffins (m) do they have left to bake? show your work!

Use composition to determine if (x) or h(x) is the inverse of f(x) for the limited domain x2-1.

W-16=-12 solve each one step equation plz