James takes two data points from the weight and feed cost data set to calculate a slope, or average rate of change. a hamster weighs 3 pounds and costs $3.50 per week to feed, while a chihuahua weighs 4.8 pounds and costs $6.20 per week to feed. using weight as the explanatory variable, what is the slope of the line between these two points? answer choices are rounded to the nearest hundredth.