Required information [The following information applies to the questions displayed below.] Travis Metals heats copper ingots to a high temperature placing them in a large oven. The heated ingots are then run through a shaping machine that forms them into wire. Due to the length of time it takes the oven to heat up, it is never turned off. When the ingots are placed in the oven the temperature is raised to a higher level. Once they are done being heated the oven temperature is turned back down until a new batch of ingots is ready to be heated. The following information shows the ingots processed and the power costs over the past 10 months. Month January February March April Apr1 May June Ingots 150 130 120 140 170 160 110 100 90 80 Power Cost $ 7,100 $6,100 $6,000 $6,600 $7,600 $ 7,200 $5,600 $4,800 $5,000 $4,000 July August September October Required: 2. Using the high-low method, estimate a cost formula for power costs. Express the formula in the form Y = a + bx. Y = 3. Predict total power costs in a month when 180 ingots are processed. Total power costs