A system of equations and its solution are given below. System A To get system B below, the second equation in system A was replaced by the sum of that equation and the first equation in system A multiplied by -2. System B The second equation in system B is -7x = 14. The solution to system B will be the same as the solution to system A. The second equation in system B is 7x = 30. The solution to system B will not be the same as the solution to system A. The second equation in system B is -7x = 14. The solution to system B will not be the same as the solution to system A. The second equation in system B is 7x = 30. The solution to system B will be the same as the solution to system A.

Since opening night, attendance at play a has increased steadily, while attendance at play b first rose and then fell. equations modeling the daily attendance y at each play are shown below, where x is the number of days since opening night. on what day(s) was the attendance the same at both plays? what was the attendance? play a: y = 8x + 191 play b: y = -x^2 + 26x + 126 a. the attendance was never the same at both plays. b. the attendance was the same on day 5. the attendance was 231 at both plays on that day. c. the attendance was the same on day 13. the attendance was 295 at both plays on that day. d. the attendance was the same on days 5 and 13. the attendance at both plays on those days was 231 and 295 respectively.

Lin is writing an equation to model the proportional relationship between y, the total cost in dollars of downloading videos from a website, and x, the number of videos downloaded. she knows that the total cost to download 3 videos was $12. her work to find the equation is shown below. joylin’s work step 1 k= 3/12= 0.25 step 2 y= 0.25x where did joylin make her first error?

What is the range of the function? f(x)=-2|x+1|? a. all real numbers. b. all real numbers less than or equal to 0. c. all real numbers less than or equal to 1. d. all real numbers greater than or equal to 1