Answer:
the answer is C, -24
Step-by-step explanation:
3-21+6= -24
It is 3:4 red marbles to total number of marbles
B. It is vertically stretched by a factor of 4. If you had x^2 versus 4x^2, when x is positive and increasing, 4x^2 is increased by 4 for every value of x.

Quite a large number. Hope this helps! (781200(squared))