1. Radium-226 decays exponentially. The data shows the amount, of radium-in grams after years. Find an exponential function rt which best fits the data. Estimate the half-life of radium-226. Graph...

1.

Radium-226 decays exponentially. The data shows the amount,
of radium-in grams after

years. Find an exponential function

^rt
which best fits the data. Estimate the half-life of radium-226. Graph the data and the curve

^rt
on the same set of axes.

2.

The table shows the length-weight relation for Pacific halibut. Find a power function

^β
which best fits the data. Graph the data and the curve

^β
on the same set of axes.