If - 5 < x < 7 and y < - 9, then the lowest possible value for (-xy) is  Choose the correct choice from the following: A) between 60 and 70 B) between 0 and 60 C) 0 D) between 0 and -70 E) none of these
If - 5 &lt; x &lt; 7 and y &lt; - 9,   Say y = -100 (y&lt;-9)   x = 6   So -xy =600 which is more than 70.   Answer is none of these.
<result>E</result>
If - 5 < x < 7 and y < - 9, then the lowest possible value for (-xy) is