When Riley goes bowling, her scores are normally distributed with a mean of 160 and a standard deviation of 13. Using the empirical rule, determine the interval that would represent the middle 68% of the scores of all the games that Riley bowls.

/is used for a fraction 1) if x = 2/3 and y = 3/4, what is the value of (x + y) (x/y) expressed as a common fraction? 2) what is the least positive integer greater than 1 that leaves a remainder of 1 when divided by each of 2, 3, 4, 5, 6, 7, 8, and 9? 3) the ponde family's powerjet pumps 420 gallons of water per hour. at this rate, how many gallons of water will it pump in 45 minutes? 4) kim's insurance company pays 80% of the cost of all prescription medication she purchases in a year beyond the first $250 worth of prescriptions. her prescriptions for this year cost a total of $570. how many dollars of this amounts will kim's insurance company pay?

Write the equation for the parabola that has x− intercepts (−2,0) and (4,0) and y− intercept (0,4).

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