It would make a lot more sense if the choices were 's' instead of '8'. With that being said, the answer should have a value that is greater than -10. That would be a positive number, or a negative number from -1 to -9. <em>So, the acceptable answers would be A and B.</em>
The correct answer for the question that is being presented above is this one: "(1) <span>For all real numbers a and b, a + b = b+ a; </span>(2) For all real numbers a and b, ab = ba; (3) <span>For all real numbers a, b and c, (a + b) + c = a + (b + c); (4) </span><span>For all real numbers a, b and c, a (b + c) = ab + ac." </span>
<u>Answer-</u>
<em>$2000</em><em> were invested at 5%</em>
<u>Solution-</u>
Let x amount of money was invested at 5% and (6000-x) amount was invested as 3%
We know that,
Putting the values,
And
According to the question,
Therefore, $2000 were invested at 5%
