The answer is $162 you take the prices of what she bought and add them together which is $73+$38+$64=$180 then you subtract the $180 from $342 which is $342-$180=$162 so the answer is $162
I think that each shelf will be 19 inches. Because 137 divided by 7 is 19 with the remainder of 4. Half of 4 is 2. Take 2 inches off of each end and that is the 4. So each shelf is 19 inches.
