I am stumped The graph of f(x)=cos(x) is transformed to a new function, g(x), by stretching it horizontally by

I am stumped

The graph of f(x)=cos(x) is transformed to a new function, g(x), by stretching it horizontally by a factor of 4 and shifting it 1 unit up.
What is the equation of the new function g(x)?
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g(x)=

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