Brandon considers good 1 and good 2 as perfect substitutes and one unit of good 1 can be substituted by two units of good 2. The original price of good 1 is $5 per unit and the original price of good 2 is $2 per unit. Brandon's income is $720. If the price of good 1 decreases to $3 per unit, how would Brandon's demand for goizd 1 change? Calculate the substitution effect and the income effect