Question
If 3<p<7 and −9<q<−4, then what is the range of p - q?
Answer: Option C
:
C
3<p<7 and −9<q<−4
Multiply the second inequality with - 1. This causes the sign to flip.
So, 3<p<7 and 4<−q<9
Adding these two inequalities, we get
7<p−q<16
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:
C
3<p<7 and −9<q<−4
Multiply the second inequality with - 1. This causes the sign to flip.
So, 3<p<7 and 4<−q<9
Adding these two inequalities, we get
7<p−q<16
Was this answer helpful ?
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