Regents Exam Questions CC.F.IF.8: Modeling Exponential Functions Page 1 Name: __________________________________

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Regents Exam Questions CC.F.IF.8: Modeling Exponential Functions
Page 1
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Name: __________________________________
CC.F.IF.8 Modeling Exponential Functions: Write a function defined by an
expression in different but equivalent forms to reveal and explain different
properties of the function. a. Use the process of factoring and completing the square
in a quadratic function to show zeros, extreme values, and symmetry of the graph,
and interpret these in terms of a context.
1 Some banks charge a fee on savings accounts that are left inactive for an extended period of time. The
equation
represents the value, y, of one account that was left inactive for a period of x
years. What is the y-intercept of this equation and what does it represent?
1) 0.98, the percent of money in the
3) 5000, the amount of money in the
account initially
account initially
2) 0.98, the percent of money in the
4) 5000, the amount of money in the
account after x years
account after x years
Regents Exam Questions CC.F.IF.8: Modeling Exponential Functions
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1 ANS: 3
REF: 011515ai