The equation that models the balance y after x months will be: y = -115x + 1600.
What is an equation?
An equation is an expression that shows the relationship between two or more numbers and variables.
Given that Zachary purchased a computer for $1600 on a payment plan.
Then two months after he purchased the computer, his balance was $1255. Three months after his balance was $1140.
Initial cost = 1600
Difference in balance = 1,255 - 1,140 = 115
Number of months used = 3 months - 2 months = 1 month1
Therefore, the equation that models the balance b after m months will be:
= - (115/1)x + 1600
y = - 115x + 1600
Hence, The equation that models the balance y after x months will be: y = -115x + 1600.
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