Working together jacob and kayla can clan an attic in 4.24 hours. had she done it alone it would have taken kayla nine hours. how long would it take jacob to do alone?

Josephine has a great garden with and area of 2x2 + x - 6 square feet

Adam plans to choose a video game from the section of the store where everything is 75% off. he writes the expression d-0.75d to find the sale price of the game if the original price is d dollars. gena correctly writes another expression, 0.25d, that will also find the sale price of the game if the original price is d dollars. use the drop down menus to explain each part of adams and rena's expression

For what values of the variable x is the expression square root of 7x+14+ square root of 7-x a real number?