Identify the equations that have one solution, infinitely many solutions, or no solution. a. 1/2y + 3.2y = 20 b. 15/2 + 2z = 1/4 = 4z + 29/4 - 2z c. 3z + 2.5 = 3.2 + 3z d. 1.1 + 3/4x + 2 = 3.1 = 3/4x e. 4.5r = 3.2 + 4.5r f. 2x + 4 = 3x + 1/2

What is the value of x? enter your answer in the box. (cm)

Follow these steps using the algebra tiles to solve the equation −5x + (−2) = −2x + 4. 1. add 5 positive x-tiles to both sides and create zero pairs. 2. add 4 negative unit tiles to both sides and create zero pairs. 3. divide the unit tiles evenly among the x-tiles. x =

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.