10. The percent of households using online banking may be approximated by the formula fr 21,5e'1:r4 where t is measured in years, with t= corresponding to the beginning of EUUU. CL b. What is the projected percent of households using online banking at the beginning of 2003'? How fast will the projected percent of households using online banking be changing at the beginning of 2003? How fast will the rate of the projected percent of households using online banking be changing at the beginning at 2003? (Hint: we want f" 3 . Why?) 11. The average energy consumption at the typical refrigeratori'freezer manufactured by York Industries is approximately: c r =1435e'm=+aoooszszo kilowatt-hours (kWh) per year, where r is measured in years, with {=0 corresponding to 19?2. u+ b. c. What was the average energy consumption of the York regrigeratori'freezer at the beginning of 1972? What is the rate of change of the average energy consumption? All refrigeratoi'freezer manufactured as of January 1, 1990* must meet a 950 kWhi'yr maximum energy-consumption standard. Ehow that the York refrigeratori'freezer satisfies this requirement