Given the following functions f(x) and g(x), solve (f + g)(3) and select the correct answer below: (1 point) f(x) = 2x + 21 g(x) = x − 24 −27 −21 6 48

Hello!

here we got two functions, f(x) = 2x + 21, and g(x) = x -24, and we want to solve (f+g)(3).

the notation (f + g)(x) refers to the addition of both functions evaluated in the point x.

(f + g)(x) = f(x) + g(x) = (2x + 21) + (x - 24) = (2x + x) + (21 - 24) = 3x - 3

then, when x = 3 we have (f + g)(x) = 3*3 - 3 = 9 - 3 = 6

so the correct answer is the third one.

is the same as replacing x by 3 in both functions, and after that do the sum between them.

75 tickets have been sold so far.

step-by-step explanation:

in this question it is clearly mentioned that 45 children's tickets have been sold and this number is 60% of the total tickets sold.

now let's assume the total number of tickets sold be x.

then 60% of x = 45

⇒

⇒ x(.6) = 45

by dividing with .6 on both the sides of the equation

⇒ x = 75

therefore 75 tickets have been sold so far.

idk

step-by-step explanation:

i don't know