TechWiz Electronics makes a profit of
$35 for each MP3 player sold and $18 for each DVD player sold. Last week, TechWiz sold a combined total of 130 MP3 and DVD players.
Let x be the number of MP3 players TechWiz sold last week. Write an expression for the combined total profit (in dollars) TechWiz made from MP3 and DVD players last week.
mp3 players --- x
DVD players --- 130-x
total = 35x + 18(130-x)
The profit made from selling x MP3 players would be 35x dollars.
To write an expression for the combined total profit TechWiz made from MP3 and DVD players last week, let's use the given information:
Profit from selling each MP3 player: $35
Profit from selling each DVD player: $18
Let x be the number of MP3 players sold. Since the total number of MP3 and DVD players sold last week is 130, the number of DVD players sold can be expressed as (130 - x).
Now, let's calculate the total profit from selling MP3 players:
Profit from selling MP3 players = Profit per MP3 player x Number of MP3 players sold
= $35 * x
Similarly, let's calculate the total profit from selling DVD players:
Profit from selling DVD players = Profit per DVD player x Number of DVD players sold
= $18 * (130 - x)
Finally, to calculate the combined total profit, we add the profits from selling MP3 players and DVD players:
Combined total profit = Profit from selling MP3 players + Profit from selling DVD players
= $35 * x + $18 * (130 - x)
Therefore, the expression for the combined total profit (in dollars) TechWiz made from MP3 and DVD players last week is:
$35 * x + $18 * (130 - x)