CC-126. a) yes-the x axis b) 36 = km^2, 12 = km^1 c) m = 3, k = 4
d) y = 4ยท3^x
CC-127. b) 4.4%
c) Since realistic interest rates are usually less than 10%, part (b) is most realistic
CC-128. a) decreasing c) 10; it is a shift up from the general case.
d) k = 20, m = 0.5 e) y = 20(0.5)^x + 10
CC-141. a) Decreasing by 20% means we multiply by 0.8 each time. Multiplier implies exponential. b) y = 23500(0.8)^x
CC-142. a)1/2 b) any number except 0 c) 1.0 x 10^23
CC-143. a) 2.236 d) 2.021
CC-144. c) f(x)= (x+1)/(x-1) d) g(x)=(3x-2)/x
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| Last updated 2008/09/28 05:12:14 PDT | Hits 188 |
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