Chapter 1 | Functions and Graphs
113
1.5 EXERCISES For the following exercises, evaluate the given exponential functions as indicated, accurate to two significant digits after the decimal. 229. f ( x ) =5 x a. x =3 b. x = 1 2 c. x = 2 230. f ( x ) = (0.3) x a. x =−1 b. x =4 c. x =−1.5 231. f ( x ) =10 x a. x =−2 b. x =4 c. x = 5 3 232. f ( x ) = e x a. x =2 b. x =−3.2 c. x = π For the following exercises, match the exponential equation to the correct graph. a. y =4 − x
234.
b. y =3 x −1 c. y =2 x +1
⎛ ⎝ 1 2
⎞ ⎠
x
d. y =
+2
e. y =−3 − x f. y =1−5 x
235.
233.
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