Algebra Practice Test Results

Question 1
78% answer correctly
Solve this equation for a: \\(a = \\frac{b^6}{b^2}\\)
-4b
\\(b^{-4}\\)
\\(b^4\\)
\\(b^{\\frac{2}{6}}\\)
Question 2
73% answer correctly
What`s the greatest common factor of 64 and 56?
4
120
16
8
Question 3
77% answer correctly
If 7 + x ≤ 21, what is the value of x ≤ ?
21x
28x
14
28