exam Maths Puzzle Numerical Ability

a figure shows the graph of f(x) =x3 and g(x) =ax3. what can you conclude about the value of a?
a< -1
-1 <a <o
0<a <1
1<a

Please explain and thank you

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exam Other Question

if an item is marked up by 61%, how do you find out the original price.

Example:

Cost $10
Mark up by 61%= $16.1
Need to know how to find original amount before markup. At 60 km/h, how far can you travel in 8.5 h? use unit analysis to check your answer

I need the steps for this