First, we need to calculate the total number of roses that the shop owner has. We do this by adding the pink roses and the red roses that the owner has.
342 + 330 = 672 total roses
Now that we have the total number of roses we simply divide by the number of roses needed for each arrangement (8) in order to calculate the total number of arrangements that the owner can make.
For this use the law of sines: cross-multiply: 16×sin (J) = 11×0.97 sin(J) = 10.72/16 sin(J) = 0.67 hit the "arcsin" button on your calculator: therefore answer B. 42 is the correct answer!!