What is the solution for 11 = y-6

What is the base of 1/9 to the power of 2

What are the solutions of the equation x4 + 6x2 + 5 = 0? use u substitution to solve.

6. sarah saved $12.75 every week for a number of weeks, w. she received an additional $25 during the last week in which she saved money. write and solve an equation to find the number of weeks, w, for which sarah had saved money if she has $114.25 now.