In Microsoft Excel, you have data that has been entered into cell A1. You need a function that looks up this value from A1 in a table of values in E1 through F10. You need to have the value from the second column (F) be displayed in the cell in which you are writing this formula. Also, A1 will precisely match one of the values in the first column (E). What formula would you write to look up this information?

I'm going to assume that there is something in A1 but the way you are describing the problem, you could just as easily write a constant in the formula you are using in cells E1 to E10 and F1 to F10

The trick is to refer to A1 as $A$1 which means that E1 to E10 isn't going to get creative and start looking for things in a1 to a10.

Here is an actual table made from what I think you mean

1 113 114

2 114 116

3 115 118

4 116 120

5 117 122

6 118 124

7 119 126

8 120 128

9 121 130

10 122 132

1 to 10 on the left is in column D

A1 contains 112

In column E the enteries from 1 to 10 simply take = $A$1 + d1

Column F uses $A$1 and adds 2*d to 112

Here is the chart shown in formula form.

1 = D1+$A$1 = $A$1 + 2*D1

2 = D2+$A$1 = $A$1 + 2*D2

3 = D3+$A$1 = $A$1 + 2*D3

4 = D4+$A$1 = $A$1 + 2*D4

5 = D5+$A$1 = $A$1 + 2*D5

6 = D6+$A$1 = $A$1 + 2*D6

7 = D7+$A$1 = $A$1 + 2*D7

8 = D8+$A$1 = $A$1 + 2*D8

9 = D9+$A$1 = $A$1 + 2*D9

10 = D10+$A$1 = $A$1 + 2*D10

Remember that 1 to 10 is in d1 to d10