Solve for x: the quantity of x plus 20 over 2 = 3x

In a sample of 200 residents of georgetown county, 120 reported they believed the county real estate taxes were too high. develop a 95 percent confidence interval for the proportion of residents who believe the tax rate is too high. (round your answers to 3 decimal places.) confidence interval for the proportion of residents is up to . would it be reasonable to conclude that the majority of the taxpayers feel that the taxes are too high?

What are the solutions to the equation 4x2+3x=24-x

For f(x)=2x+3 and g(x)=x^2- 8 find (f+g) (x)