## Precalculus (6th Edition) Blitzer

a.) $\sqrt {100}$ b.) $\sqrt {100}$ , 0 c.) $\sqrt {100}$, 0, -9 d.) $\sqrt {100}$, 0, -9, 0.25, 9.2, -$\frac{4}{5}$ e.) $\sqrt 3$ f.) $\sqrt {100}$, 0, -9, 0.25, 9.2, -$\frac{4}{5}$, $\sqrt 3$
a.) Natural numbers are the set of all whole numbers from 1 to Infinity b.) Whole numbers are the set of all natural numbers and 0 c.) Integers are the set of all positive and negative whole numbers d.) Rational Numbers include integers, fractions, and terminating decimals (decimals which don't go on infinitely) e.) Irrational numbers are the set of numbers that can't be written as a fraction or as a terminating decimal. ($\sqrt 3$ written as a decimal goes on infinitely) f.) Real numbers include both rational and irrational numbers.