Answer:
negative
positive
negative
Step-by-step explanation:
Cross price elasticity of demand measures the responsiveness of quantity demanded of good A to changes in price of good B.
If cross price elasticity of demand is positive, it means that the goods are substitute goods.
Substitute goods are goods that can be used in place of another good.
if the price of a good increases, the demand for the substitute increases and if the price of the good reduces, the demand for the substitute increases.
If the cross-price elasticity is negative, it means that the goods are complementary goods.
Complementary goods are goods that are consumed together
Flashlight and batteries are complements because they are used together.