Please help this is on a timed test. What are the two equations to set up to solve the equation |2x−5|=7 ?

2x−5=7 and 2x−5=−7

2x+5=7 and −2x + 5 = 7

2x−5=7 and 2x+5=−7

2x+5=7 and 2x+5 = −7

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The weight of full–grown tomatoes at a farm is modeled by a normal distribution with a standard deviation of 18.4 grams. the 95 percent confidence interval for the mean weight of the tomatoes is calculated using a sample of 100 tomatoes. what is the margin of error (half the width of the confidence interval)?

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