Algebra Exponents and Roots Practice Test Results

Question 1
93% answer correctly
\\(2^4 \\times 2^7\\) = ?
\\(2^{11}\\)
\\(-3^2\\)
\\(2^{-3}\\)
\\(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
94% answer correctly
The square of 3 is ?
27
16
4
9