12 Amanda is thinking of a 5-digit number. • The digit in the hundreds place is 7. • The digit in the thousands place is the greatest possible digit. • The digit in the ones place is double the digit in the ten thousands plac • The digits in the thousands place and ones place add UP to 17 • The digits in the tens and ten thousands place add up to the digit in the hundreds place What number is Amanda thinking of? Write your answer and your work or explanation in the space below.

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?