Aaron goes to his favorite hamburger joint with a friend and orders two hamburgers and two french fries. his total cost is $10.50. the next week, he goes with two other friends. they order four hamburgers and three french fries. this time the total is $19.50. choose two equations that could be used to determine the cost for hamburgers (h) and french fries (f).

This is about circle theorems. someone asap : (

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?

What is the interquartile range of this day at set?