A function assigns the values. The value of (r+s)(-2) is equal to 9.
A function assigns the value of each element of one set to the other specific element of another set.
Given the function r(x)=3x+5, while s(x)=4x, therefore, the expressions can be written as,
(r-s)(x) =r(x)-s(x) = 3x+5 - 4x = -x+5
(r*s)(x) = r(x)·s(x) = (3x+5)·(4x) = 12x² + 20x
The expression for (r+s)(x) can be written as,
(r+s)(x) = r(x)+s(x) = 3x+5+4x = 7x+5
(r+s)(-2) = 7(-2)+5 = -14+5 = 9
Hence, the value of (r+s)(-2) is equal to 9.
Learn more about Function:
https://brainly.com/question/5245372
#SPJ1
