Anyone wanna a sister a researcher is trying to find out if there is a correlation between the u. s. economy and the number of hours spent on social media. the researcher determines that the correlation coefficient is r = 1.26. what does this value mean? a) the researcher made an error because −1 ≤ r ≤ 1. b) when the u. s. economy is good, people spend more time on social media. c) when the u. s. economy is poor, people spend more time on social media. d) when the u. s. economy is good, people spend less time on social media.

Which description is represented by a discrete graph? kiley bought a platter for $19 and several matching bowls that were $8 each. what is the total cost before tax? the temperature at 9 a.m. was 83° f and is heating up at an average rate of 6°f per hour. what is the temperature x hours later? juan ate an egg with 78 calories and some cereal with 110 calories per serving for breakfast. what is the total amount of calories he consumed? a bottle contained 2,000 ml of liquid and is being poured out at an average rate of 300 ml per second. how much liquid is left in the bottle after x seconds?

The algebraic expression shown below is missing two whole number constants. determine the constants so that the expression simplified to 14x + 11 4x + 8(x + + + 2x

Abarge can safely haul no more than 400 tons across the river. the barge has an empty weight of 24 tons. the average weight of the railroad cars is 4 tons each.bhow many railroad cars can the barge haul?