When grocery stores offer discount coupons on Sunday papers, it is trying to

In the above figure, if the price of good A falls from P0 to P1 and the demand for good B increases from D0 to D1, then goods A and B

A) are substitute goods. B) are inferior goods. C) will have a negative cross elasticity of demand. D) are both price elastic but not perfectly price elastic.

The above figure shows the market for pizza. Which figure shows the effect of an increase in the price of sandwiches, which for consumers are substitutes for pizza?

A) Figure A B) Figure B C) Figure C D) Figure D