exam Maths Puzzle Numerical Ability

What are the dimensions of a cube that has a total volume of 1.0 Liters?
i have tried the formula: S^3. So i think the dimensions would be 1.

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exam Other Question

For the exponential function ex and logarithmic function log x, graphically show the effect if x is doubled. Write the equation of the line passing through each of the pairs of points. Write your result in slope-intercept form, where ever possible.
(2,-3) and (2,4)

Mcgraw Hill 6th edition, chapter 7.3, problem #24. Thanks so much for your help!!!