Algebra Exponents and Roots Practice Test Results

Question 1
93% answer correctly
\\(2^4 \\times 2^7\\) = ?
\\(2^{11}\\)
\\(2^{-3}\\)
\\(-3^2\\)
\\(2^{0.57}\\)
Question 2
63% answer correctly
Solve this equation for a: \\(a = \\frac{b^5}{b^2}\\)
\\(\\frac{b^2}{b^5}\\)
\\(b^3\\)
\\(b^{7}\\)
\\(b^{\\frac{5}{2}}\\)
Question 3
78% answer correctly
Solve this equation for a: \\(a = \\frac{b^6}{b^2}\\)
\\(b^{\\frac{2}{6}}\\)
\\(b^{-4}\\)
\\(b^4\\)
-4b