Problem : 
Simplify the following expression:  3(x + 2).
3(x + 2) = 3x×32 = 9×3x.
 
Problem : 
What is y-intercept of the graph of the 
function b×ax?
The y-intercept is at 
(0, b).
 
Problem : 
For what values of x is the function f (x) = 2×2x less than 1?
f (x) < 1forallx < - 1.
 
Problem : 
Where do the graphs of y = axandy = a-x intersect?
They intersect at the point 
(0, 1).
 
Problem : 
Does the function f (x) = (
)x increase or decrease as x increases 
or decreases?  How about the function f (x) = 3x?
f (x) = (
)x increases as 
x decreases and decreases as 
x 
increases.  
f (x) = 3x decreases as 
x decreases and increases as 
x 
increases.