The reciprocal of a fraction is just that fraction flipped.
So the reciprocal of 1/12 would be 12/1.
Answer: -9z + 15/x^2
The correct answer is -9z + 15/x^2 when simplified
<em>Hope this helps =)</em>
The largest change in temperature was between July and March/April
There are two ways to find the total with tax
Either you can do
cost + cost x tax rate
or
cost x (1+tax rate)
Since the second one requires less steps, it's easier to do that.

The cost with tax is
$17.27