Given the functions a(x) = 3x − 12 and b(x) = x − 9, find a[b(x)].

PLZ HEL

The value of is

Explanation:

Given that the functions and

We need to determine the value of

The value of can be determined by substituting in the function  

Thus, we have,

Let us substitute the value in the function

Substituting in the function , we get,

Multiplying the terms, we get,

Adding the like terms, we have,

Thus, the value of is

3x - 39

Step-by-step explanation:

a(b(x)) = 3b(x) - 12

= 3(x - 9) - 12

= 3x - 27 - 12

= 3x - 39

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