You belong to an e-book club. The membership fee per month plus the fee for each book you download is defined by the equation y = 2.25x + 8 where x is the number of books you download and y is the total cost. You just received notice that the membership fee is being raised to $10.25 per month. Which of the following statements is true about your membership and the change in your cost?

The table below represents the displacement of a fish from its reef as a function of time: time (hours) x displacement from reef (feet) y 0 4 1 64 2 124 3 184 4 244 part a: what is the y-intercept of the function, and what does this tell you about the fish? (4 points) part b: calculate the average rate of change of the function represented by the table between x = 1 to x = 3 hours, and tell what the average rate represents. (4 points) part c: what would be the domain of the function if the fish continued to swim at this rate until it traveled 724 feet from the reef? (2 points)

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.

Multiply and simplify 2x^2 y^3 z^2 · 4xy^4 x^2