Greg is saving up for a new cell phone that will cost him $550. He already has $300 saved. If he would like to buy the phone in four weeks, how much must he save each week if he plans to have at least $550? What is the inequality and solution?​

One line passes through (-7,-4) and (5,4) . another line passes through the point (-4,6) and (6,-9)

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.

Consider the set of all four-digit positive integers less than 2000 whose digits have a sum of 24. what is the median of this set of integers?