E No example: x = 4 maps to either y = +4 or 7 = -4
Answer from: Quest
2(2x + 3) = -4 + 2(2x + 5)
4x + 6 = -4 + 4x + 10
4x + 6 = 4x + 6
4x - 6 + 6 = 4x - 6 + 6
4x = 4x
x = x
unlimited solutions.
Answer from: Quest
step-by-step explanation:
the ratio of red paint to blue paint is always 9/7. that means that, whatever x's value, (4x+12)/(4x-4) has that same ratio. so, set up an equation and cross-multiply to solve for x:
9/7 = (4x+12)/(4x-4)
9(4x-4) = 7(4x+12)
36x - 36 = 28x + 84
8x - 36 = 84
8x = 120
x = 15
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Determine the fraction of total interest owed. after the fourth month of a 12-month loan: the numerator is: {(n + ) + (n + ) + (n + ) + (n + )} = , and the denominator is: {(n) + (n + 1) + + (n + )} = . therefore, the fraction is numerator/denominator (to the nearest tenth) =
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