Factor: x^2 -9
A. (x − 3)(x-3)
B. (x+3)(x-3)
C. (x – 3)?
D. (x+3)

Can (3,5 and square root 34) be sides on a right triangle?

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

In a two-digit number the units' digit is 7 more than the tens' digit. the number with digits reversed is three times as large as the sum of the original number and the two digits. find the number.