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1. Consider the exponential function / (x) =10(2]". (a) Find the value of (0) . What point does this (b) Is this an increasing or decreasing exponential represent on the graph of y - f (x)? function? How can you tell based on its equation? (c) Is this function's average rate of change over (d) Using your calculator, sketch a graph of this the interval -15 x$2 greater or less than that function on the axes shown below. Use the of the linear function , (x] =10r+ 7? Justify. window indicated. Mark the y-intercept. 3 -LO 2. Which of the following is a decreasing exponential function whose y-intercept is 20? (1) 1= 20 = (3) y= -2x+20 (2) > -20 (41 3 - ( #) - 20 3. Which of the following functions would best describe the data in the table? (1) y = 10x -2 (3) > = 5(2)' 3 4 (2) y=8x+2 (4) 1 =2(5 ) 2 10 50 250 1250