I need help in answering the below question

L. How will each of the following affect the position of the demand curve for Tomatoes? a. An increase in the price of Tomatoes. b. A decrease in the price of Tomatoes. c. An increase in per capita income. d. A decrease in the price of Salbutes (assuming all salbutes will have tomatoes). Playing marbles became exceedingly popular after a $2.00 price bag fell by a $0.10. making sales rise from 110 to 118 units. What was the price elasticity of the product