Current Attempt in Progress Each of the following functions gives the amount of a substance present at time . In each case, give the amount present initially (at t = 0), state whether the function represents exponential growth or decay, and give the percent rate. Enter the exact answers. (a) A = 100(0.92)' The initial amount is ! and it represents with rate %. (b) A = 4.03(1.087)' The initial amount is and it represents with rate %. (c) A = 5500(0.98)' The initial amount is and it represents with rate %. (d) A = 12(1.14)' The initial amount is and it represents with rate %