Use a graphing calculator to solve 2.71x - 1.7 = 4.1 - 1.86x by using a system of equations. Round to the nearest hundredth if necessary

answer: 1 + 1 = 11

step-by-step explanation:

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step-by-step explanation:

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