When you bind a combo box to a table in one data source, you can display the data from one column of that table in the list of the combo box and use the selected value to a. update a column in a table of another data source b. update another column in that table and a column in a table of another data source c. update another column in that table d. update another column in that table or a column in a table of another data source

b. update another column in that table and a column in a table of another data source

Step-by-step explanation:

A The data source is connected via the "DataSource" property to a ComboBox.To bind a control of ComboBox or ListBox. Specifies the DataSource attribute for an entity source. Set the Display Member attribute to the column name in the data source if you are binding on a table

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step-by-step explanation:

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c.

step-by-step explanation:

because first you have to add the 4x, 9x, and the 7x together and you get 20x and then you add the last numbers up and you get 5and then you put the subtraction sign in there and that's how you get the answer.