What is the value of log base 2 of 32 plus log base 3 of 9?
Answer and explanation
Correct answer: A. 7, since the first logarithm is 5 and the second is 2
- Step 1: 2^5 = 32, so the first logarithm is 5. Step 2. 3^2 = 9, so the second is 2, and the sum is 7. Answer: 7. Why not the others: The other values come from wrong exponents or from adding the arguments.
Practise more Mathematics.
Free questions with an explanation for every one, and full timed FUVEST (University of São Paulo Entrance Exam) mock tests.
More Mathematics questions
- Solve the equation 3x - 7 = 11.
- What is the slope of the straight line through the points (1, 2) and (3, 8)?
- What are the roots of x^2 - 5x + 6 = 0?
- An arithmetic sequence has first term 3 and common difference 4. What is the sum of its first 10 terms?
- Let f(x) = 2x + 1 and g(x) = x^2. What is f(g(3))?
- A price falls by 20% and then rises by 10%. What is the net change from the original price?