9x3=$27
$27+$10=$37
$35-$37= -$2
Hope that helped:D
In "How to eat an Ice-cream cone" the author cautions us in letting the cashier hand to us other people's cones because it might get contaminated as the cashier is in charge of the store's money and there is a lot of bacteria on money. The cashier must wash their hands before making the ice-cream and after giving money.
Yes you did it correctly. When quoting a sentence it needs to be put in quotation marks to show that those are not your words but somebody else's.
Hope this helps!!