He earns $285 plus a commission of $337.04. So his total take home pay is $622,04.
Assume L=1.5W, where W=width, L= Length of the triangle.
Therefore,
Perimeter (P) = 2(W+L) = 2(W+1.5W) = 2(2.5W) = 5W=20 => W=20/5 = 4 in
Then, L=1.5W = 1.5*4 = 6 in
Area, A= L*W = 6*4 = 24 in^2
Infinitely many because if you subtract 7x from both sides, you get 4 = 4, which is true at all times no matter what x is.
The correct answer is b) 2
