The answer is D, good night
<u>Answer</u>
F(a+2) = (3a+11)/(a+2)
<u>Explanation</u>
F(x) = (3x + 5)/x
If you are to find F(a+2), you replace x with (a+2)
F(a+2) = (3(a+2)+5))/(a+2)
= (3a+6+5)/(a+2)
=(3a+11)/(a+2)
<span>The length of a rectangle is five times its width, and if the perimeter of the rectangle is 96 m then the length would be 19 m.</span>
The first contract can go to any of 12 firms. The second can go to any of the remaining 11 firms, and so on. Finally, the 4th contract can go to any of the 9 firms that don't yet have a contract.
The number of ways the contracts can be awarded is
... 12×11×10×9 = 11,880
