Answer:
They get 4 good points!
Step-by-step explanation:
21-17= 4:)
Answer:
similar triangles can be used to find the height of a building.
Step-by-step explanation:
Answer:
Step-by-step explanation:
Given
Equations are 
and 
take
Put the value of y in another equation
Put the value of x in y
Hence,
Let x be the number of MP3 players TechWiz sold last week.
If TechWiz sold in total 130 MP3 and DVD players, then it sold (130-x) DVD players.
1. TechWiz Electronics makes a profit of $35 for each MP3 player sold, then it makes a profit $35x for x MP3 players sold.
2. TechWiz Electronics makes a profit of $18 for each DVD player sold , then it makes a profit $18(130-x) for (130-x) DVD players sold.
3. An expression for the combined total profit (in dollars) TechWiz made from MP3 and DVD players last week is
35x+18(130-x).
You can simplify it:
35x+2,340-18x=17x+2,340
Answer: 35x+18(130-x) or 17x+2,340
