1. 0.89 is the square root of what value? a.9 b.89 c.0.7921 d.0.9434 2. the square root of a number is between 8 and 9. which of the following could be the value of that number? select all that apply. a.8.6 b.74 c.80 d.81.5 3. what value is the cube root of 27? a.4 b.5 c.3 d.6 4. the cube root of a number is between 2 and 3. which of the following could be the value of that number? a.5 b.29 c.35 d.10

Problem One
The answer is 0.89^2
0.89^2 = 0.7921

Put this into your calculator like this.
0.89
x^2 or ^2 which ever you have.
=

Problem 2
74^(1/2) = 8.9  Check this one. 
80^(1/2) = 8.944 just barely
81.5 ^(1/2) = more than 9. It does not fit.
8.6 has a square root of just under 3. It's too small.

Note to get a square root between 8 and 9 you need numbers between 64 and 81. Any number outside this range does not have a square root between 8 and 9.

Problem Three
Short answer 3.
3 * 3 * 3 = 27

You could do it like this.
27 ^ 0.33333333333 = 
3
y^x     ^     x^y are all equal. Those keys do the same thing.

Problem Four
2 cubed = 2 * 2 * 2=8
3 cubed = 3 * 3 * 3 = 27

Any number between these 2 will by your answer. 
Answer D

Ithink it would be 160 people