Answer:
The income elasticity of demand for fast food is 0.33, and therefore fast food is a normal good (classified as basic good).
Explanation:
the formula used to calculate income elasticity of demand = % change in quantity demanded / % change in income
income elasticity of demand = 1% / 3% = 0.33
since the income elasticity is positive, it is a normal good and since the elasticity is less than 1, it is a basic good.