Question

ause
The expression 500 + 25w models the balance of Santiago's bank account, where w represents the number of
weeks since the account was opened. What does 500 represent?

Answer 1

The 500 in the equation represents the initial amount deposited in the bank before the weeks start counting.

Linear equation

Linear equation is an equation in which the highest power of the variable is one.

Therefore, the modelled equation represents a linear equation.

• y = 500 + 25w

where

w = number of weeks since the account was opened

The equation models the balance in her account. This equation tells us each week the owner deposits 25 units amount.

Therefore, the 500 in the equation represents the initial amount deposited in the bank before the number of weeks start counting

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