The vertex form of the function gives the vertex as (-6,48). The vertex of f(x)=x^2 is (0,0) so from this information, the vertex is moved LEFT 6 and UP 48. This cancels out two options. The coefficient -3 tells us that the graph is flipped or reflected over the x-axis (negative sign flips graph) and that all y-values will be 3 times as large. Larger y-values for the same x inputs makes the graph narrower.
Answer: 
<u>Step-by-setp explanation:</u>

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Answer:
35 blocks are given to the class
Step-by-step explanation:
she has 19 pounds which she divides into 1/2 pounds
19/1/2
38 blocks
she keeps 3 of the blocks and gives the rest away
38-3
35 blocks