7. Which of the following numbers is not a perfect square?
A. 169
B. 64
C. 25
D. 132
8. What is the square root of 9?
A. I and -1
C. 3 and -3
B. 2 and -2
D. 4 and -4
9. Which of the following is the principal root of V-64 ?
A. -3
B. -4
C. - 5
D. -6
10. A park shaped like a square has an area of 45 feet squared. What is the side length of the park to its nearest tenths? A. 5.9
B. 7.2
C. 6.7
D. 4.8
11. What do you call on the union of rational and irrational numbers?
A. integers
B. whole numbers
C. real numbers
D. fraction​