What is the formula for the following arithmetic sequence? 12, 6, 0, -6, ...

a. an = 12 + (-6)( n - 1)
b. an = -6 + 12( n - 1)
c. an = 6 + 12( n - 1)
d. an = 12 + 6( n - 1)

Which representation has a constant of variation of -2.5

[15 points]find the least common multiple of the expressions: 1. 3x^2, 6x - 18 2. 5x, 5x(x +2) 3. x^2 - 9, x + 3 4. x^2 - 3x - 10, x + 2 explain if possible

Your friend uses c=50p to find the total cost, c, for the people, p, entering a local amusement park what is the unit rate and what does it represent in the context of the situation?