Based on calibrated and atmospherically corrected reflectance data and measured in situ grass cover one can create a calibrated relationship between the NDVI and percent grass cover over an organic-rich soil. The calibration resulted in the following equation: y = 148.34 - 35.21 R = 0.9995, where NDVI is the independent variable and grass cover is the dependent variable. a. What is the grass cover for an NDVI value equal to 0.5? b. What are the NDVI values for bare soil and the maximum grass cover