Archer Company is a wholesaler of custom-built air-conditioning units for commercial buildings. It gathered the following monthly data relating to units shipped and total shipping expense: Month Units Shipped Total Shipping Expense January 3 $ 1,800 February 6 $ 2,300 March 4 $ 1,700 April 5 $ 2,000 May 7 $ 2,300 June 8 $ 2,700 July 2 $ 1,200
Using the high-low method, calculate the equation of a cost line for the shipping expense for this company (Y -a+ bX)

Martinez company has the following two temporary differences between its income tax expense and income taxes payable. 2017 2018 2019 pretax financial income $873,000 $866,000 $947,000 (2017' 2018, 2019) excess depreciation expense on tax return (29,400 ) (39,000 ) (9,600 ) (2017' 2018, 2019) excess warranty expense in financial income 20,000 9,900 8,300 (2017' 2018, 2019) taxable income $863,600 $836,900 $945,700(2017' 2018, 2019) the income tax rate for all years is 40%. instructions: a. prepare the journal entry to record income tax expense, deferred income taxes, and income taxes payable for 2017, 2018, and 2019. b. assuming there were no temporary differences prior to 2016, indicate how deferred taxes will be reported on the 2016 balance sheet. button's warranty is for 12 months. c. prepare the income tax expense section of the income statement for 2017, beginning with the line, "pretax financial income."