What is the value of X

The level of co2 emissions, f(x), in metric tons, from the town of fairfax x years after they started recording is shown in the table below. x 2 4 6 8 10 f(x) 26,460 29,172.15 32,162.29 35,458.93 39,093.47 select the true statement.

Write two subtraction equations that are equivalent to 5 + 12 = 17.

Find the roots of the polynomial function f(x) = x^3 + 2x^2 + x