Whenever you sign a lease for an apartment, you typically have to pay a security deposit before you even move in; this is in case something happens while you care occupying the apartment and repairs have to be made. one apartment building has apartments that rent for $900 a month and a security deposit of $600. write an equation to represent the situation described.

If you would like to know the equation that represents the situation described above, you can do this using the following steps:

m ... the number of months living in the apartment 
d ... a security deposit
r ... rent for the apartment 
t ... the total amount of money

t = m * r + d
t = m * $900 + $600

The equation that represents the situation described above would be t = m * $900 + $600.