Find the area A of the region. (Use decimal notation. Give your answer to two decimal places.) A =Which interval of 0-values corresponds to the shaded region in the graph of r = f(0) = 2.8 - 0? On the graph, a = 2.8. 2- (Give your answer as an interval in the form (*,*). Use the symbol co for infinity, U for combining intervals, and an appropriate type of parenthesis "(",")", "[","]" depending on whether the interval is open or closed. Enter O if the interval is empty. Express numbers in decimal notation to one decimal place.)