SAT math OG 2016 - test 4 - Calculator OK

Q21 In a scatterplot of this data, where renewable energy consumption in the year 2000 is plotted along the x-axis and renewable energy consumption in the year 2010 is plotted along the y-axis for each of the given energy sources, how many data points would be above the line y = x ?
Q22 Of the following, which best approximates the percent decrease in consumption of wood power in the United States from 2000 to 2010 ?