What is the 12th term of the sequence 15, 11, 7,

a) -29
b) -25
c) -21
d) -33

If the graphs of the linear equations in a system are parallel, what does that mean about the possible solution(s) of the system? a. there are infinitely many solutions. b. there is no solution. c. there is exactly one solution. d. the lines in a system cannot be parallel.

Which is the completely factored from of xy^3-x^3y

Varies inversely with x. if y=8.5 when x=-1 find x when y=-1