Gerry came to their house and said that the job would take about half a day and would cost about $600. Is Gerry's estimate consistent with his advertisement? Why or why not?

no, x cannot be the same number. in all of them, x is 1. for one input there is another output. g is not a function

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in problems involving proportions, we can use cross products to test whether two ratios are equal and form a proportion. to find the cross products of a proportion, we multiply the outer terms, called the extremes, and the middle terms, called the means.

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