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Simple math questions?
I need help answering these math questions before taking the ACT testing.
A car average 27miles per gallon. If gas cost $4.04 per gallon, which of the following is closest to how much the gas would cost for this car to travel 2,727?
When x=3 and y=5, by how much does the value 3x third power -2y?
What is the value of X when 2x + 3= 3x-4?
1 Answer
- 7 years ago
27 miles will cost you $4.04
2727 miles = 27 * 101 miles
Thus, this will cost you 101 * $4.04 = $404 + $4.04 = $408.04
3 x ^ 3 - 2 y
3 (3) ^3 - 2 (5) = 81 - 10 = 71
2x + 3 = 3 x + 4
3x -2x = 3 - 4
x = -1