A. the total area of the model is 130 m2. write an equation to find x. b. solve the equation by completing the square. (x + 2)(2x + 2) = 130; x = 5.12 m (x + 2)(2x + 2) = 130; x = 6.70 m (x + 2)(2x + 2) = 130; x = 6.58 m (x + 2)(x + 2) = 130; x = 9.40 m

If the ratio of sum of the first m and n terms of an ap is m2 : n2 , show that the ratio of its mth and nth terms is (2m − 1) : (2n − 1).

If the ratio of sum of the first m and n terms of an ap is m2 : n2 , show that the ratio of its mth and nth terms is (2m − 1) : (2n − 1).

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.