Algebra Exponents and Roots Practice Test Results

Question 1
93% answer correctly
\\(2^4 \\times 2^7\\) = ?
\\(-3^2\\)
\\(2^{-3}\\)
\\(2^{11}\\)
\\(2^{0.57}\\)
Question 2
63% answer correctly
Solve this equation for a: \\(a = \\frac{b^5}{b^2}\\)
\\(b^{7}\\)
\\(b^3\\)
\\(b^{\\frac{5}{2}}\\)
\\(\\frac{b^2}{b^5}\\)
Question 3
77% answer correctly
What is \\(\\sqrt{9} \\times \\sqrt{16 }\\) ?
\\(\\sqrt{12}\\)
\\(\\sqrt{25}\\)
12
-7