Advanced MathEasyStarting value of a quadratic model
Advanced Math practice question
The number of visitors to a stall t hours after it opens is modelled by v(t) = 3t² + 7. How many visitors does the model give at the moment the stall opens?
Answer: 7
At t = 0, v = 3(0) + 7 = 7.
Common wrong answers
- If you answered 0
- The constant 7 does not vanish at t = 0.
- If you answered 3
- 3 is the coefficient of t².
- If you answered 10
- 10 is the value at t = 1.
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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