Advanced Math practice question

Answer: 40

Each value is twice the previous one: 20 × 2 = 40.

Common wrong answers

If you answered 25

25 adds 5.

If you answered 30

30 adds 10, as if the growth were linear.

If you answered 80

80 is the value at x = 4.

More Advanced Math questions

• Easy
  If f(x) = 3x − 7, what is the value of f(5)?
• Easy
  What are the solutions to x² − 9 = 0?
• Easy
  Which of the following expressions is equivalent to x² + 7x + 12 ?
• Easy
  The function g is defined by g(x) = x³ + 2x. What is the value of g(−2) ?
• Easy
  For x > 0, which of the following is equivalent to ∛(x⁵) ?
• Easy
  The function h is defined by h(x) = (x − 6)(x + 2). What is one value of x for which h(x) = 0 ?