Asuccessive approximation a/d converter has a full-scale output of 0 to 10 v and uses an 8-bit register. an input of 6.185 v is applied. estimate the final register value

  158

Explanation:

The input is 6.185/10.000 = 0.6185 of the full-scale of the A/D converter. If a 10V input is represented by a register value of 255, then the expected register value for this input is about ...

  0.6185·255 = 157.7175 ≈ 158

In hexadecimal, that is 9E.

x+2 because it just doubles hon so the pattern can actually tell you the expression.

so for example,

if x=2 then 2+2 is 4

if x=4 then 4+4 is 8

and so on and so forth.

i really hope that this makes sense and you out in a way hon: )