Triangle T R S has centroid Z. Lines are drawn from each point to the midpoint of the opposite side to form line segments T W, R
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In order to make 119$ he would need to work 7 hours
Now, If the exponent was negative like you asked....
Let f and s be the ages of the father and the son. We have
From the first equation we derive
Substitute this expression for f in the second equation and we have
The solutions to this equation are s=5 or s=37
Since the sum of the ages must be 42, the solutions would imply
We can only accept the first solution, since the second would imply a son older than his father!