help me please!!

Question

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
136
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.

Answer 1

Hi Julia,

 

If X = the number of MP3 players then 136 - X equals the number of DVD players.

 

The total profit equals the sum of the number of each player times the profit for each player. . .

 

35X + 18(136-x) = total profit