exam Maths Puzzle Numerical Ability

Simplify. Okay, I have to simplify this but I do not know how. This is very new to me and a little odd. Please help me?
I have this 1 + 1/4 which is over this 3 - 1/2

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exam Other Question

for the function y= 1/x-2 give the values y for x = -1,0,1,2,3,4

please show work to help me understand this problem

using these points draw a curve $1,000 is being compounded for 3 years, so your balance on January 1, 2007, is $1,259.71:

FV to the lower n power = PV(1+i)^n = $1000(1+0.08)^3 = 1259.71

I need some help with this Please. Thanks.