Gray rented a tuxedo for his friend's wedding. It cost him $78 to rent the tuxedo for 2 days. What was the daily rental rate for the tuxedo, in dollars per day?

39 dollars per day

Step-by-step explanation:

Take the total cost and divide by the number of days

78/2 =39

(sin 42)/31. = sinx)/37

sinx = 37 (sin42)/31

= 37× 0.66/31 = 0.787

x= 51.9

other angle opposite to y = 180-51.9-42

= 180- 93.9 =86.1

so

sin42)/31 = sin 86.1)/y

0.021 = 0.997 /y

y= 0.997/0.021 =47.47