Ajar contains 0.75 liter of blackberry juice and 0.60 liter of blueberry juice. patrick poured 0.25 liter of guava juice into the jar. he then drank 0.20 liter of the mixture.

part a: write an expression to represent the total amount of juice left in the jar.

part b: identify which property is used in each step to simplify the expression.

Aretha wanted to gather data about the cost of local bowling leagues in her area. she plotted the data and determined that the average bowling league costs consist of a one-time registration fee and a monthly fee modeled by the equation y = 15x + 20. identify and interpret the y-intercept in this model. the y-intercept is 20. this is the cost per month. the y-intercept is 20. this is the cost of registration. the y-intercept is 15. this is the cost of registration. the y-intercept is 15. this is the cost per month.