The Consumption of Electricity Can Be Modeled by C $C = A e ^ { r t }$

question 60

Multiple Choice

The consumption of electricity can be modeled by C $C = A e ^ { r t }$ , where A is the current use, r is the rate at which the use is increasing, and t is the number of years. Suppose the consumption of electricity grows at 6.8% per year.
Find the number of years before the use of electricity has tripled. Round the answer to the nearest hundredth.

• A) 0.16 year
• B) 44.12 years
• C) 1.62 years
• D) 16.16 years

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Definitions:

Maximum Parsimony

Maximum parsimony is a statistical method for reconstructing phylogenies that identifies the tree topology that minimizes the total amount of change, or the number of steps, required to fit the data to the tree.

Introgression

Introgression describes the movement of alleles from one species or population to another.

Incomplete Lineage Sorting

Occurs when a genetic polymorphism persists through several speciation events. When fixation of alternative alleles eventually occurs in the descendent species, the pattern of retention of alleles may yield a gene tree that differs from the true phylogeny of the species.

Genetic Hitchhiking

Genetic hitchhiking occurs when an allele increases in frequency because it is physically linked to a positively selected allele at a nearby locus.