Advanced MathEasyValue of a quadratic model
Advanced Math practice question
The area A of a certain shape, in square centimetres, is given by A = 2s², where s is a length in centimetres. What is A when s = 5?
Answer: 50
2 × 25 = 50.
Common wrong answers
- If you answered 10
- 10 uses 2 × 5.
- If you answered 20
- 20 uses 2 × 5 × 2.
- If you answered 100
- 100 uses (2 × 5)².
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 ?
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