Q. What is the expression for f(x) when we rewrite (491)x⋅(71)6x+11 as (71)f(x) ?f(x)=
Rewriting base 49: We need to express the given function in terms of a single base to match the form (71)f(x). Let's start by rewriting the base 49 in terms of 7, since 49 is 7 squared.
Simplifying base 49: The base 49 can be written as 72. Therefore, (491)x can be rewritten as (721)x. This simplifies to (71)2x because when you raise a power to a power, you multiply the exponents.
Combining the bases: Now we have (71)2x⋅(71)6x+11. Since the bases are the same, we can add the exponents to combine them into a single expression.
Simplifying the exponents: Adding the exponents, we get (71)2x+6x+11. Simplifying the exponents, we have (71)8x+11.
Determining f(x): Now that we have the expression in the form (71)something, we can see that "something" is our f(x). Therefore, f(x)=8x+11.
More problems from Compare linear and exponential growth