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

3

step-by-step explanation:

in standard form:

a= dictionaries

b= maps

you have to buy 3 dictionaries, so put a 3 next to the a (dictionaries) so that you can multiply them by each other.

a3+b= 60 (the amount of money you have)

we already know the cost of a=15 so replace a with $15

($15 x 3)+b=60

multiply 15 and 3 to get $45 and replace it with $45

45+b=60

and then replace b with 15 to get the total:

45+15=60

that means you have $15 left after buying 3 dictionaries.

15 divided by the cost of a map ($5) equals 3.

so you can buy 3 maps.

sorry if it was confusing!

12

step-by-step explanation: