What is the value of -2x to the 2 power+4y if x=-2 and y=3

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!

Simplify a7/a4 a) 1/a3 b)-a/a2 c)a4/a3 d)a3

17 in long 1.3 ft wide and 8in high what is the volume