Add another data series to the chart to represent gross profit. use the value of cell a2 as the series name and cells b2:d2 as the series values. do not rebuild the chart from scratch excel

**urgent** roberto plans to use two transformers to reduce a voltage of 120 v to 4 v. he uses a transformer that has 300 coils in the primary winding and 50 coils in the secondary winding. he has four other transformers, as listed in the table. which transformer should roberto use to have an ending voltage of 4 v? a- w b-xc- yd- z