Algebra Practice Test Results

Question 1
75% answer correctly
Solve this equation for a: \\(a = \\frac{b^6}{b^3}\\)
\\(\\frac{b^3}{b^6}\\)
\\(b^{9}\\)
-3b
\\(b^3\\)
Question 2
58% answer correctly
If \\(a = \\frac{4}{9}\\) then \\(\\frac{1}{a}\\) = ?
9
4
\\(\\frac{4}{9}\\)
\\(\\frac{9}{4}\\)
Question 3
65% answer correctly
If a + b = 4, what is the value of 5a + 5b?
40
10
24
20