#1 what is the value of the expression 7–3? answers: a. –21b. - 1/343 c.1/343 d. 343 #2what is the value of the expression 1/5^-5? answers: a. 1/3125 b.1/25 c.25 d. 3125 #3what is the value of the expression 2/4^-3? answers: a. 1/32 b. 1/6 c.128 d.256 #4 what value of k solves the equation? k^-2=1/64 answers: a.1/8 b. 8 c. 32 d. 128 #5 what value of n solves the equation? 4^n= 1/64 answers: a. –3 b. 3 c. 16 d. 256

First question

The given expression is

Which can also be written as

Therefore the correct option is C.

2.

The given expression is

Which can also be written as

So the correct option is D

3.

The given expression is

Which can also be written as

And the correct option is C

4.

The given equation is

So the correct option is B

5.

The given equation is

And the correct option is A .

the mistake in the pattern is that :

b. the decimal point was moved one too many place values each time

the correct pattern could be made by :

b. moving the decimal point to the right the same numbers of place values as the exponents