Jessica purchased a dvd that was on sale for 12% off the sales tax in her county was 3% let y represent the original price of the dvd write an expression that can be used to determine the final cost of the dvd

y - 12% - 3% = x

Step-by-step explanation:

step-by-step explanation:

(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