Advanced MathEasy–MediumMissing table value of an exponential-plus-constant function
Advanced Math practice question
The function p is defined by p(x) = 3·2ˣ + 1. The table shows some of its values. x | p(x) 0 | 4 1 | 7 2 | ? What is the missing value?
Answer: 13
p(2) = 3(4) + 1 = 13.
Common wrong answers
- If you answered 10
- 10 continues the pattern of adding 3, but the function doubles the 3·2ˣ part.
- If you answered 12
- 12 forgets the + 1.
- If you answered 14
- 14 doubles 7, but the + 1 is not doubled.
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