1. The factors of a2 - 9 are a. (a+3)(a -3)
b. (a+9)(a-9)
c. (a-9)(a-9)
d. (a+3)(a+3)
2. A linear equation consists of polynomials of degree
a. One
b. Two
c. Three
d Four​

Step-by-step explanation:

1. (a+3)(a-3) = a²+3a-3a-9 = a²-9

2. a linear equation consists of a polynomial of degree one.

the median here is 25. your lowest value is 14 and highest value is 48. to find the third quartile, find the medium number in between 25 and 48 which would be 42 i believe.