Table 3-4. Class Average Percent Weight Change in Potato Cubes 27-1x1x1 Potato Cubes 5-80 Class Average % Weight Change Cale 1-3x3x3 Potato Cubes 1.80

An electronics store sells new and used Z-phones. The store manager made the scatter plot below to show the selling prices of used Z-phones and their ages, in monthsIf these data are modeled by the line y=-10x+410, which best describes a valid prediction the manager could make, based on the dataA.If the store sells a Z-phone that is 30 months old, it will probably sell for only $50B.If the store sells a brand-new Z-phone, it can expect a customer to pay about $410C.For every one-month increase in phone age, the price a customer will pay increases by about $10D.For every one-year increase in phone age, the price a customer will pay decreases by about $10

what would be the estimated y-intercept.

Alejandro is selling HDMI cables on eBay, and is trying to determine the best price to sell at.  For the last 10 weeks, he has adjusted his price slightly each week and tracked the number of cables he sold.  He plotted the results, and drew a line he feels fits the data well. a) The line of best fit passes through the points (3.50, 220) and (4.75, 190).  Find an equation for the line.   Use variables: p for price in dollars, and Qfor quantity of cables sold.   b) Using this model, predict the number of cables Alejandro would sell at a price of $3.65, to the nearest whole cable. cables