I. let f(x) = 2x – 1, g(x) = 3x, and h(x) = x2
+ 1. compute the following:
5. f(f(x))

Steve wants to develop a way to find the total cost of any item including sales tax. the sales tax in his city is 6%. his friend jenna writes the expression x + 6x where x is the cost of the item. explain whether her expression is correct based on the situation.

What is the perimeter of a rectangular building that is 80 feet wide and 140 feet deep?

25 ! i need asap! ! ill mark brainliest!