Fat Panda

You are the new caretaker of the pandas at the Madrid zoo and your star panda, Puddles, is overweight. She just lays around in a tree all day long and the zoo is getting horrible press. You were hired because of your expertise in mammals and you need to show them you can get the panda's weight under control.

You've decided to make him exercise every day and put him on a limited diet.  He's making some progress but the zoo public relations director wants to know when Puddles will be down to his healthy weight of 175 pounds.  You've graphed his weight over the last two weeks and fit the data to a line:  y = -0.26*x + 188.8.  Based on the trend so far, when will Puddles be at his healthy weight of 175 pounds?  (Day 16 is today, April 30th.)

Saving the Baiji

With less than twenty left in the world, the Baiji dolphin is one of the most endangered species on Earth.  But you have a solution.  You've invented a duplicating machine so you can put one dolphin in and get two out!  But right now you only have a prototype that can duplicate coins. But once you have enough money from the prototype, you can build the full size duplicator. Test it out below after you solve the trapezoid problem.

Good luck!

Length of the midsegment:

Solve this problem to test the duplicator machine!