The percentage y (of total personal consumption) an individual spends on food is approximately 0.25 y = 35X percentage points (6.5 S X s 17.5) where X is the percentage she spends on education.+ An individual finds that she is spending X = 7 + 0.21\" percent of her personal consumption on education, where t is time in months since January 1. At what rate is the percentage she spends on food is changing as a function of time on February 1. (Round your answer to two decimal places.) Answer: X percentage points per month v y Interpretation: On February 1, the percentage she spends on food is decreasing v y at a rate of -0.12 x percentage points per month. v