exam Maths Puzzle Numerical Ability

find slop and y intercept for y=5x

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exam Other Question

Infinite geometric series.
The question asks me to write the repeating decimal .999... as a fraction.
I think it is 9/9.00 infinetly and then a 1 but I have no idea how yo write that.
Thanks for the help Using a calculator, find log 1000 where log means to the base of 10. How do I solve this?