D) The measure of <em>x</em><em> </em>is 55 degrees and <em>b</em><em> </em>= 16.38.
Step-by-step explanation:
If the complimentary angle is 35 degrees, then <em>x</em> must be 55 degrees. <em>b</em><em> </em>= 16.38 according to the right triangle ratio which states that <em>b</em> = 4/5(<em>c</em>). Since <em>c</em><em> </em>is 20, <em>b</em><em> </em>is 16.38.
To find the rate<span> of change, find the total change in price and then divide it by number of years over which it changed. So the answer is </span><span>$0.603</span><span> which is </span><span>$0.20 per pound per year</span><span>.</span>