Find the following sum 7(3x2+2x-5)+2(-x2+3)​

7x+8y=-18, 4x-9y=-3 solve the system of equations

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

How many ordered pairs of positive integers satisfy xy=32?