Use a quick approximation to estimate the derivative of the given function at the indicated point. Hint [see example 2(a). ] (round your answer to three decimal places. )f(x) = 1 − 7x; x = 2f '(2) =.

)because it's going in order of the math sign

First step is to get rid of the square root. remember that a square root is the same as raising to the (1/2) power. see below: multiply exponents per exponent rules to get: remember you subtract exponents from the denominator and add exponents in the numerator so: simplify further: so a is the correct choice. if you don't understand this google exponent rules and it will you understand. look at the image results.