a. $−0.80000000$
b. $ −0.98000000$
c. $−0.99800000$
d. $−0.99980000$
e. $−1.2000000$
f. $−1.0200000$
g. $ −1.0020000$
h. $−1.0002000$ $\mathop {\lim }\limits_{x \to 1} \left( {1 - 2x} \right) = - 1$