thomas sedan gets THREE more than THREE times the amount of miles to the gallon than camrons sport utilty SUV. if the SUV gets TWELVE miles per gallon how many miles per gallon does the sedan get?
A. n= 3(12) +3
B. n= 3 (12)-3
C. 3n - 3=12
D. 3n +3=12
2007-12-31 06:47:10 · 7 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
So the SUV = 12. The sedan gets three more than 3 times so 3x + 3. Now we can substitute the 12 for x so n = 3(12) + 3
2007-12-31 07:12:06 · answer #1 · answered by Anonymous · 0⤊ 0⤋
Let n represent mpg of sedan:
n = 3(12)+3 or A
2007-12-31 06:58:09 · answer #2 · answered by Robert S 7 · 0⤊ 0⤋
D) 3n +3 = 12
2007-12-31 06:56:34 · answer #3 · answered by jaya 4 · 0⤊ 1⤋
i THINK its D
but i'm not sure
i'll do it for you though lol
here is how you solve D:
3n+3=12
YOU SUBTRACT 3 FROM BOTH SIDES
3n+3=12
-3 -3
3 CANCELS OUT AND ITS LEFT WITH ONLY 3n AND 12-3 IS 9
3n=9
DIVIDE 3 FROM BOTH SIDES
3n=9
/3 /3
SINCE 3 DIVIDED BY THREE IS 0 YOU'RE LEFT WITH N
AND 9 DIVIDED BY 3 IS 3
your answer is n=3!
i hope i helped! ^_^ good luck
2007-12-31 06:55:22 · answer #4 · answered by Annie ♥ 3 · 0⤊ 0⤋
T=3C+3=3*12+3=39
2007-12-31 06:52:48 · answer #5 · answered by kuiperbelt2003 7 · 0⤊ 0⤋
assume that you don't know how many miles/gallon the SUV gets.
Let this value be x.
so the SUV gets x miles/gallon.
the Sedan gets:
3 times the amount of gallons of the SUV, this means it gets: 3x
the Sedan gets:
3 more miles than 3 times the amount of gallons of the SUV, this means it gets:
3x+3
And that is the total amount of miles/gallon that the sedan gets.
BUT you know the value of x, it is 12.
so:
n = 3(12) + 3
2007-12-31 06:52:10 · answer #6 · answered by sayamiam 6 · 0⤊ 0⤋
A
3(12)=36+3=39
2007-12-31 06:50:10 · answer #7 · answered by Aubrey 4 · 1⤊ 0⤋