Pls help me answer this

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!

Maria walks a round trip of 0.75 mile to school every day.how many miles will she walk in 4.5 days

How do you write 600 as a product of its prime factors (index! )