True or False: x=14 is a solution to x+8=23. True or False: x=14 is a solution to x-10=4. Evaluate the expression x^3-5x for x= -2. If a state’s income tax is 4.3% of taxable income, how much will be owed in tax if your taxable income is $51,000? Solve the following equation: X+2.29=8.27.