Chapter 7 - Exponents and Exponential Functions - 7-6 Exponential Functions - Practice and Problem-Solving Exercises - Page 457: 33

Y-values increase as the X-values increase.

You are given $f(x)=$ $2.5^{x}$. Plug in the values $-2,-1,0,1,2$ for the X-variable: $f(-2)=$ $2.5^{-2}={\dfrac{1}{6.25}}$ $f(-1)=$ $2.5^{-1}={\dfrac{1}{2.5}}$ $f(0)=$ $2.5^{0}=1$ $f(1)=$ $2.5^{1}=2.5$ $f(1)=$ $2.5^{2}=6.5$