2A. Exponential and Logarithmic Functions
United States of America
AP Precalculus
2.3 Exponential functions
Interactive practice questions
Consider the expression $3^x$3x.
a
Evaluate the expression when $x=4$x=4.
b
Evaluate the expression when $x=-4$x=−4. Leave your answer in fractional form.
c
What happens to the value of $3^x$3x as $x$x gets larger?
it stays the same
A
it gets smaller, approaching zero
B
it gets larger, approaching infinity
C
d
What happens to the value of $3^x$3x as $x$x gets smaller?
it gets larger, approaching infinity
A
it gets smaller, approaching zero
B
it stays the same
C
Medium
1min
Consider the function $y=3^x$y=3x.
Medium
4min
Consider the function $y=2^{-x}$y=2−x.
Medium
5min
Consider the graph of the equation $y=4^x$y=4x.
Medium
1min
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