Atechnician charges $25 per hour plus $50 for a house call to repair home computers. make a table and a graph to show the cost for 1 2 3 and 4 hours of home computer repair service is there a direct variation?

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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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