economics problems

\f\f353. You run a smaii business and wouid iike to predict what wiii happen to the quantity demanded For your product it" you raise your price. Whiie you do not know the exact demand curve For your Product, you do know that in the First year you charged $45 and soid 1200 units and that in the second year you charged $50 and said 1300 units. a. [F you pian to raise your price by 10 percent, what wouid be a reasonabie estimate oF what wifi happen to quantity demanded in percentage terms? b. iF you raise your price by 10 percent} wiff revenue increase or decrease? \f\f