It will take 15 days for Fred to have at least that amount in his account, as per linear equation.
A linear equation is an equation that has one or multiple variable with the highest power of the variable is 1.
Given, Fred needs at least $500 to buy a new computer.
He has an account balance of $50.
He deposits $30 per day.
Let, within 'x' days he will collect that amount.
Therefore, $50 + $30x = $500
⇒ 30x = 500 - 50
⇒ 30x = 450
⇒ x = 15
Learn more about linear equation here: https://brainly.com/question/11800209
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