(sin 42)/31. = sinx)/37
sinx = 37 (sin42)/31
= 37Γ 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
4 and 5)16.97 or 12β2
6)15.59 or 9β3
7)y = 15.59 or 9β3 x =27
8)17.80
to determine the unit cost your would divide the total cost by the number sold.
7 bagels for $4.41 $4.41/7 = $.63 each at fresh side
5 bagels for $3.60 $3.60/5 = $.72 each at value mart