I know 7 is If goods are used together, increased demand for one will increase demand for the other.
The demand for one good can be significantly affected by the demand for another good whether they are complements or substitutes. For question 7, the correct answer is b) If goods are used together, increased demand for one will increase demand for the other. For question 8, the answer is b) Demand for a good can be elastic at a low price but inelastic at a high price.
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