What is the y-coordinate of the solution for the system of equations?

{x−y=12
{27+3y=2x

enter your answer in the box.
y =

The management of a supermarket wants to adopt a new promotional policy of giving a free gift to every customer who spends more than a certain amount per visit at this supermarket. the expectation of the management is that after this promotional policy is advertised, the expenditures for all customers at this supermarket will be normally distributed with a mean of $95 and a standard deviation of $20. if the management wants to give free gifts to at most 10% of the customers, what should the amount be above which a customer would receive a free gift?

Asmall book publisher knows that 26 books weigh 41 lbs. how much do 40 books weigh?

Jack brought 12 pet monkeys. if each monkey cost $45.99, how much money did he spend in all?