exam Maths Puzzle Numerical Ability

Please help me with this question;
The figure shows the graph of g(x)=e^x and a second exponential function f(x). I dentify the second function.

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exam Other Question
You have 480 feet of fencing to enclose a rectangular garden. You want the length of the garden to be 30 feet greater than the width. Find the length and width of the garden. How long should each piece be? One number is five more than another number. Their sum is 285. what are they?

5x+x=258
6x=258
6x/6=258/6
x=47.5

5x
5(47.5)
237.5