Abag contains purple marbles and blue marbles, 23 in total. the number of purple marbles is 9 less than 3 times the number of blue marbles. how many purple marbles are there?

You’re repairing a large rectangular aquarium. the final step is to cover the glass with a protective film. the front and back of the aquarium measure 4 meters by 2 meters, and the sides of the aquarium measure 3 meters by 2 meters. how many square meters of protective film do you need? ( )

What value of x is in the solution set of 4x - 12 s 16 + 8x? -10 -9 -8 -7

Which graph has figures that can undergo a similarity transformation to justify that they are similar? (obviously not the third one)