Adding x-axis values to a histogram

Dear useRs,

Is there a way one can add x-axis values to a histogram? Example:

z = rgamma(n=1000, shape = 8, scale = 1000)
hist(z, breaks = 30)

Currently I see 4 x-axis values: 5000, 10000, 15000, 20000. Can I add more
values or modify the ones currently showing? I tried ?hist, yet couldn't
work this out.

Thank you very much.

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~~~~~~~~~~~~~~~~~~~~~~~~~~
Diego Mazzeo
Actuarial Science Student
Facultad de Ciencias Econ?micas
Universidad de Buenos Aires
Buenos Aires, Argentina

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