What we have to solve is:

we should multiply both sides by10, to get the "x" by itself:



so there are 8 tenths in this number!
Answer:
B. a>b
Step-by-step explanation:
a is the higher number line beacuse it is farthter right than b. so a>b
$30 + $35 = $65
Assuming tax is on whole sale not each item:
$65 * 0.06 (6%) = $3.90 (6% of $65)
$65 + $3.90 = $68.90 ($65 + 6%)
OR
You could combine both of these steps and just use this working:
$65 * 1.06 (106%) = $68.90 (106% of $65)
The answer is 3.7 when rounded
Subtract three every time