The expression 1.5⋅1.09t models the housing costs, in thousands of dollars, for summer term t years since Chinedu applied to his college.What does 1.09 represent in this expression?Choose 1 answer:(A) The summer housing costs were $1,090 the year that Chinedu applied to his college.(B) Chinedu applied to his school 9 years ago.(C) The summer housing costs increase by 9% each year.
Q. The expression 1.5⋅1.09t models the housing costs, in thousands of dollars, for summer term t years since Chinedu applied to his college.What does 1.09 represent in this expression?Choose 1 answer:(A) The summer housing costs were $1,090 the year that Chinedu applied to his college.(B) Chinedu applied to his school 9 years ago.(C) The summer housing costs increase by 9% each year.
Identify components of expression: Identify the components of the expression.The expression given is 1.5×1.09t. This is a typical exponential growth model where 1.5 represents the initial value and 1.09t represents the growth factor over time t.
Understand growth factor: Understand the growth factor.The base of the exponent, 1.09, represents the annual growth rate of the housing costs. Since the base is greater than 1, it indicates a percentage increase each year.
Convert growth factor to percentage: Convert the growth factor to a percentage.To interpret the growth factor, subtract 1 from the base of the exponent and then multiply by 100 to convert it to a percentage. (1.09−1)×100%=0.09×100%=9%.
Match growth factor to answer choices: Match the growth % to the answer choices.The growth percent of 9% matches with the statement that the summer housing costs increase by 9% each year.
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