Algebra Exponents and Roots Practice Test Results

Question 1
78% answer correctly
Which of the following is not a synonym for \\(7^2\\) ?
7 cubed
7 squared
The square of 7
7 to the second power
Question 2
93% answer correctly
\\(2^4 \\times 2^7\\) = ?
\\(2^{0.57}\\)
\\(-3^2\\)
\\(2^{11}\\)
\\(2^{-3}\\)
Question 3
58% answer correctly
Simplify \\(\\sqrt{20}\\)
\\(2\\sqrt{20}\\)
\\(5\\sqrt{20}\\)
\\(2\\sqrt{5}\\)
\\(5\\sqrt{2}\\)