Answer:
+2x+15
Step-by-step explanation:
-3x+5x=+2x
(+2x-7) × (+8)
(+2x)(+15)
I THINK
*Missing Information: Total number of barrels are 60 million*
The correct answer is: Option (C) $20
Explanation:
As we are interested in finding the cost for a barrel of gasoline, we need to read the percentage of gasoline from the pie-chart first—which is 34%.
Now number of barrels containing gasoline = 34% of 60 million barrels = million barrels
For all the barrels, the total income is $408 million; therefore, in order to find the per-barrel cost, we need to divide $408 by 20.4:
Hence the correct answer is $20 (Option C).
You multiply both equations by a factor to get them to have the same X coefficient, the first by 5 and the second by 2, you get 10x-15y=5 and 10x+8y=28. Then you subtract the equations to get 23y=23, y=1, plug y into first equaition, x=2. Answer is (2,1)