The following data show the cooling temperatures of a freshly brewed cup of coffee after it is poured from the brewing pot into a serving cup. The brewing pot temperature is approximately 180º F. 
The output for an exponential model ln(Temp) = β0 + β1Time + ε, t is below. 
Which of the following is the percentage of variation in ln(Temp) explained by the model?
Definitions:
Covalent Bonding
A chemical bond that involves the sharing of electron pairs between atoms, stabilizing them and making the atoms bound together in a molecule.
Protobionts
Assemblages of organic polymers that spontaneously form under certain conditions. Protobionts may have been involved in chemical evolution.
Abiotically Produced
Referring to substances or processes occurring without the involvement of biological organisms, typically through physical or chemical phenomena.
Ribozymes
RNA molecules capable of catalyzing specific biochemical reactions, similar to protein enzymes.
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