Answer:
2x+59.
Step-by-step explanation:
Let <em>J </em>represent Jessica's weight and <em>R</em> represent Ronda's weight.
Jessica weighs <em>x+34</em> pounds. Thus:

Ronda weighs 12 pounds less than Jessica. In other words:

The sum of their weights, therefore, is:

Now, if Jessica gains 5 pounds and Ronda loses 2 pounds, the net gain of the total weight would be 3 pounds. Thus, we only need to add 3 to the original total to find the sum of their new weights:

The sum of the new [weights] is represented by 2x+59.
36%=36/100=0,36
0,36•47677= 17 163,74
So there's around 17 164 species treatensd with extinction
How many was to make49 out of ones and tens