B and C; as the y intercept increases/decreases, the graph of the line shifts up/down.
The y intercept is where the function crosses the y-axis. If the y intercept moves either up or down, the whole function will be translated up/down vertically along the y-axis.
Answer: Area: 
Step-by-step explanation:
Step 1: Convert the Expressions


Step 2: Reduce the Numbers


Step 3: Multiply


Step 4: Simplify


Please mark brainliest if this helped! :)
Answer:
15x^2-2x-8
Step-by-step explanation:
i did it on a paper just don't want to write cause its going to be to much to write hope this helps good luck