Sox friends each use a $2-off coupon to buy themselves a movie ticket. They spend a total of$42. What is the price of one movie ticket without the coupon

Let's say the price of one movie ticket without the coupon is "P".

Since each person uses a $2-off coupon, the total amount that they saved on the tickets is 2 * 5 = $<<2*5=10>>10.
Therefore, the total amount they spent on the tickets without the coupon is $42 + $10 = $52.

Since there are 5 friends, and the total amount they spent on the tickets is $52, the price of one movie ticket without the coupon is $52 / 5 = $<<52/5=10.40>>10.40. Answer: \boxed{10.40}.