Use a calculator to approximate these number. (See Examples 1 and 2.)11.26Examples 1–21. 4...

Use a calculator to approximate these number. (See Examples 1 and 2.)

11.26

Examples 1–2

1. 46, which is read “four to the sixth,” or “four to the sixth power,” is the number

Similarly, (−5)3 = (−5)(−5)(−5) = −125, and

2. Use a calculation to approximate the given expressions.

(a) (1.2)8

 Solution Key in 1.2 and then use the xy key (labeled ∧ on some calculators); finally, key in the exponent 8. The calculator displays the (exact) answer 4.29981696.

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(b)

 Solution Don’t compute 12/7 separately. Use parentheses and key in (12/7), followed by the xy key and the exponent 23 to obtain the approximate answer 242,054.822.