The general setup of this type of equation is y=mx+b, where m represents the slope and b represents the y intercept. In answer choice D, since the rock collection grows at the rate of 5 per day, you know that the slope (or m) is 5. 8 is greater than 3, 4, and 5, meaning that answer C has the largest slope. Hope this helps!
The answer is B because they are sharing the 2 sandwiches so since there is a total of 4 people, you would need to do 2 divided by 4. Hope this helped you. :)
