The town of Springfield, USA has a population of 9900 people. The population is growing at a rate of 2.3% each year.Which expression gives the town's population 5 years from now?Choose 1 answer:(A) 9900⋅0.0235(B) 9900+0.0235(C) 9900(1+0.023)5(D) 9900+(1+0.023)5
Q. The town of Springfield, USA has a population of 9900 people. The population is growing at a rate of 2.3% each year.Which expression gives the town's population 5 years from now?Choose 1 answer:(A) 9900⋅0.0235(B) 9900+0.0235(C) 9900(1+0.023)5(D) 9900+(1+0.023)5
Exponential growth formula: To find the population after a certain number of years when it is growing at a constant percentage rate per year, we use the formula for exponential growth: P=P0(1+r)t, where P0 is the initial population, r is the growth rate as a decimal, and t is the time in years.
Convert growth rate to decimal: Convert the growth rate from a percentage to a decimal by dividing by 100. The growth rate is 2.3%, so in decimal form, it is 0.023.
Substitute values into formula: Substitute the given values into the exponential growth formula: P=9900(1+0.023)5. This will give us the population of Springfield 5 years from now.
Evaluate expression for population: Evaluate the expression to ensure it matches one of the given options. The correct expression based on the exponential growth formula is 9900(1+0.023)5, which corresponds to option (C).
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