Find the value of Y.

Which rule describes the composition of transformations that maps △abc to △a”b”c

What is the domain of the step function f(x)=[2x]-1?

Isabelle is mixing red and blue paint to make purple paint she adds 3/10 of a fluid ounce of red to 12/25 of a fluid ounce of blue to make 1 1/30 fluid ounces of purple how many fluid ounces of red paint ounces of red paint will she need to make 3 fluid ounces of purple paint