Suppose that the functions s and t are defined for all real numbers x as follows. s(x)= x+6
t(x)= 4x2
write the expressions for (s. t)(x) and (s-t)(x) and evaluate (s+t)(-3).

Step-by-step explanation:

Given functions are:

We have to find:

(s.t)(x) => this means we have to multiply the two functions to get the result.

So,

Also we have to find

(s-t)(x) => we have to subtract function t from function s

Also we have to find,

(s+t)(-3) => first we have to find sum of both functions and then put -3 in place of x

Putting x = -3

Hence,