4.2 Comparing Linear and Exponential Change 7) Money is added to (and never removed from) two different savings accounts (Account A and Account B) at the start of each month according to different mathematical rules. Each savings account had $500 in it last month and has $540 in it this month. (a) Assume the money in Account A is growing linearly: How much money will be in the account next month? How much money was in the account two months ago? How long will it take for the account to have at least $2500? Write an equation relating the amount of money in the account and the number of months from now. Clearly define the meaning of each variable in your equation, and interpret the meaning of each constant in your equation. (b) Assume the money in Account B is growing exponentially. How much money will be in the account next month? How much money was in the account two months ago? How long will it take for the account to have at least $2500? Write an equation relating the amount of money in the account and the number of months from now. Clearly define the meaning of each variable in your equation, and interpret the meaning of each constant in your equation.
4.2 Comparing Linear and Exponential Change 7) Money is added to (and never removed from) two different savings accounts (Account A and Account B) at the start of each month according to different mathematical rules. Each savings account had $500 in it last month and has $540 in it this month. (a) Assume the money in Account A is growing linearly: How much money will be in the account next month? How much money was in the account two months ago? How long will it take for the account to have at least $2500? Write an equation relating the amount of money in the account and the number of months from now. Clearly define the meaning of each variable in your equation, and interpret the meaning of each constant in your equation. (b) Assume the money in Account B is growing exponentially. How much money will be in the account next month? How much money was in the account two months ago? How long will it take for the account to have at least $2500? Write an equation relating the amount of money in the account and the number of months from now. Clearly define the meaning of each variable in your equation, and interpret the meaning of each constant in your equation.
Chapter5: Exponential And Logarithmic Functions
Section5.5: Exponential And Logarithmic Models
Problem 1ECP: In Example 1, in what year will the amount spent on mobile online advertising be about $300 billion?
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Transcribed Image Text:4.2 Comparing Linear and Exponential Change
7) Money is added to (and never removed from) two different savings accounts (Account A
and Account B) at the start of each month according to different mathematical rules. Each
savings account had $500 in it last month and has $540 in it this month.
(a) Assume the money in Account A is growing linearly:
How much money will be in the account next month?
How much money was in the account two months ago?
How long will it take for the account to have at least $2500?
Write an equation relating the amount of money in the
account and the number of months from now. Clearly
define the meaning of each variable in your equation, and
interpret the meaning of each constant in your equation.
(b) Assume the money in Account B is growing exponentially.
How much money will be in the account next month?
How much money was in the account two months ago?
How long will it take for the account to have at least $2500?
Write an equation relating the amount of money in the
account and the number of months from now. Clearly
define the meaning of each variable in your equation, and
interpret the meaning of each constant in your equation.
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