Algebra Know-It-ALL

550 Final Exam

(c) 5.

(d)j5.

(e) 7.

20. What’s the binary equivalent of the decimal 127?
    (a) 1001000
    (b) 1111111
    (c) 1000001
    (d) 10000000
    (e) 11100111


21. In Fig. FE-2, what is being done to the original number 16n?
    (a) It is being repeatedly multiplied by 2.
    (b) It is being repeatedly multiplied by −2.

–2n

4 n

a

“Number

reflector”

Finish at n

Start at 16n

Positive numbers

Negative numbers

Figure FE-2 Illustration for Final Exam

Questions 21 and 22.