Let
x-------> the whole number
y------> the decimal number
we know that
------> equation 1
assume the value of x and then calculate the value of y
Let
x=280
solve for y in the equation 1

substitute the value of x


therefore
<u>the expression is equal to</u>
280*0.001=0.28
Answer:

they're all like terms so we just add and subtract
<em>y over 4 </em><em>means the number (y)</em><u><em /></u><em> </em><em>divided by 4.</em><u><em>
</em></u>
The second one is the correct answer