Please help me answer this, and help me also understand. Thank you

hill you are very proud of what you've done Now, let's try another activity Directions: Analyze and compute problems Write your amower on the arenot sheet provided 1 An individual consumer's monthly demand for downloadable e-books is given by the equation Qdeb = 2 - 04peb + 0.0005/ + 0.15Phb where Quet equals the number of e books demanded each month, Pot equals the price of e-books, I equals the household monthly income, and Pia equals the price of hardbound hooks, per unit Notice that the sign on the price of hardbound books is poutive, indicating that when hardhound books increase in price, more e-books are purchased, thus, according to this equation, the two types of books are substitutes Asuime that the price of e-books is e 10.68. household income is $2,100, and the price of hardbound books is $21 40 I Determine the number of e-books demanded by this household each month 2 Given the values for I and Pub, determine the inverse demand function 3 Determine the slope of the demand curve for e-books. 4 Calculate the vertical intercept (price-axis intercept) of the demand curve if income increases to 63000 per month