There are some grammar mistakes and therefore I can't read it properly to answer
We know that
<span>A number x, rounded to 1 decimal place is 12.3
</span><span>so
x>=12.25
and
x < 12.35
</span><span>the error interval for x is the interval [12.25,12.35)
</span>
the answer is
[12.25,12.35)
Hi the awnser is 3(t-y) because you always do the math that is in the parentheses first!
