Lus The driving time varies inversely with
the speed of the car.
If a certain trip takes 40 minutes
when you travel 50 miles per hour,
how many minutes would it take if
you travel 40 miles per hour?

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step-by-step explanation:

entering that problem on the tube might get you an answer

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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a function could be identified in 3 ways either on a chart,graph, or ordered pairs. first a function is that each point has its own. the rule is that there can be many x's to one y but there can not be 2 x's at different y's. so on a graph when you put a straight line through the y's there should be one dot only to be a function.

step-by-step explanation: