Answer :
Answer: (a०b)=-193
Step-by-step explanation:
In this problem, you are trying to find function of a function. (a०b) is a function of a function, which can be rewritten more simply as a(b(5.2)). Similar to other mathematical operations, we will start with the function furthest in the parenthesis, which is b(5.2).
Simply plug in 5.2 as the x in this equation, and solve:
b(5.2)=6(5.2)+7
b(5.2)=31.2+7
b(5.2)=38.2
Now that you have solved b(5.2), you can replace it with the result of that equation: 38.2. Now, you have only one function: a(38.2). Now, solve this function as normal:
a(38.2)=-5(38.2)-2
a(38.2)=-191-2
a(38.2)=-193
(a०b) is the final result of function a. Therefore: (a०b)=-193
