Dan and Bala each wanted to buy a file but found out that they did not have enough money. Dan needed $2.20 more while Bala needed $1.70 more. If they put their money together to buy only 1 file, they would still be short of $0.90. How much did the file cost?​

Which value of m will create a system of parallel lines with no solution? y= mx - 6 8x - 4y = 12

Abakery recorded the number of muffins and bagels it sold for a seven day period. for the data presented, what does the value of 51 summarize? a) mean of bagels b) mean of muffins c) range of bagels d) range of muffins sample # 1 2 3 4 5 6 7 muffins 61 20 32 58 62 61 56 bagels 34 45 43 42 46 72 75

Carl's candies has determined that a candy bar measuring 3 inches long has a z-score of +1 and a candy bar measuring 3.75 inches long has a z-score of +2. what is the standard deviation of the length of candy bars produced at carl's candies?