exam Maths Puzzle Numerical Ability

Evaluate the functions for the values of x given as 1, 2, 4, 8, and 16. Describe the differences in the rate at which each function changes with increasing values of x.


4. f(x) = 10^x

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exam Other Question

Is this rational or irrational:

sqrt -

I believe this is irrational because there is no numbers involved in this, am I correct? Thank you very much!
The width of a rectangular Piayground is 2x-5 feet, and the length is 3x+9 feet. Write a polynomial P(x) that the perimeter and then evaluate this perimeter polynomial if x is 4 feet.