12. 15 points) Eveta Company uses kilowatt hours to estimate utility costs with the following cost estimating equation: y = 2,000 + 6x Using the estimating equation, complete the following statements by writing your answer in the blank line provided a. The slope of the cost function is: b. The intercept of the cost function is: The dependent variable of the cost function is: d. The independent variable of the cost function is: e. if kilowatts were 4,000 hours for the current period, the estimated cost of utilities is