Answer:
an organism killing another organism for food
J=amount Jake has; F=amount Fred has=2J
J+F=$54
J+2J=$54
3J=$54
J=$18
ANSWER 1: Jake has $18.
F=2J=2($18)=$36 ANSWER 2: Fred has $36.
I put the answer below in the picture!
She saved up a total of $82.60, and had to spend a total of $60.90, so she would have $21.70 left and need to save up another $180.40, hope this helps
Let's assume x Mo's number.
11+x/3=-1
==>x/3=-1-11
==>x/3=-12
==>x=-12*3
==>x=-36