Solve for b

4.55 = b/0.4 + 1.3

Subtract 1.3 from each side and you get

3.25 = b/0.4

Then you multiply by .4 on each side and you get 1.3. (1.3 is ur answer)

To double check divide 1.3 by .4, you get 3.25, and then add 1.3 and you get ur original answer of 4.55

The graphs are not typed