Which of the following numbers has a square root of 9

3
4.5
18
81

Complete the equation of the line through (−10,3) and (−8,−8). use exact numbers.

Solve: 25 points find the fifth term of an increasing geometric progression if the first term is equal to 7−3 √5 and each term (starting with the second) is equal to the difference of the term following it and the term preceding it.

Factor the polynomial expression x6 – x3 – 20