Q:

Which is the correct way to evaluate f(15) for the function f(x)=2(x+3)?Start by substituting 15 for x. Then, simplify to get f(15)=36.Since f(15) is not within the domain of the function, it cannot be evaluated.Since f(15) means the output value is 15, the function evaluates to f(15)=15.Start by letting 2(x+3)=15, then solve for x. When solved, the answer is x=4.5.

Accepted Solution

A:
Answer:the first option Step-by-step explanation:Start by substituting 15 for x. Then, simplify to get f(15)=36.cuz f(x)=2(x+3)f(15)=2(15+3)= 2Γ—18=36gimme brainliest plz