The work of a student to solve a set of equations is shown: equation a: y = 4 ? 2z equation b: 4y = 2 ? 4z step 1: ? 4(y) = ? 4(4 ? 2z) [equation a is multiplied by ? 4.] 4y = 2 ? 4z [equation b] step 2: ? 4y = 4 ? 2z [equation a in step 1 is simplified.] 4y = 2 ? 4z [equation b] step 3: 0 = 6 ? 6z [equations in step 2 are added.] step 4: 6z = 6 step 5: z = 1 in which step did the student first make an error? step 1 step 3 step 4 step 2

Which value of c would make he following expression completely factored? 8x+cy

Idon’t understand! use slope intercept form to solve: through: (2,5) slope= undefined

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.