<span>Question 3
Solve for d.
13d + 4 = 43
13d = 39
d = 3
answer
A. 3
</span><span>Question 4
Solve for r.
4r - 6 = 30
4r = 36
r = 9
answer
D. 9
</span>
<span>Question 5
Solve for u.
126 = 6u
u = 126/6
u = 21
answer
B. 21
</span>
Answer:
d. hope I get it right I never got brainliest
Step-by-step explanation:
Answer:
im not too sure but my best guess would be
D= 900×T
D= the constant of proportionality multiplied by time to get how many miles traveled.
if the hours given were 1 hour 2 hours & 3 hours
if you multiplied them by 900 you would get the distanced traveled
900 x 1 = 900 miles traveled in one hour
900 ×2 = 1800 miles traveled in 2 hours
sounds good ?
negative 8 because 45/-9 = -5
The combined total profit is (17x + 2502) dollars
<em><u>Solution:</u></em>
Profit for each Mp3 player = $ 35
Profit for each DVD player = $ 18
Let x be the number of MP3 players sold last week
Number of MP3 players = x
Last week, Techwiz sold a combined total of 139 MPS and DVD players
Total number of mp3 and dvd sold = 139
Number of DVD player = 139 - x
<em><u>Write an expression for the combined total profit (in dollars) Techwiz made from MP3 and DVD players last week.</u></em>
Combined total profit = Number of MP3 players x Profit for each Mp3 player + Number of DVD player x Profit for each DVD player

Thus the combined total profit is (17x + 2502) dollars