It’s need to be a full sentence:(

Step-by-step explanation:

For the first question: You need to multiply 20 by 0.05 to find the sales tax amount in dollars, which gives you $1. The sales tax is equal to $1.

For the second question: To find the total cost, add $1 to $20 to get $21 as the total cost for the shirt.

(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