Question

a function f is defined by f(x)=2x-3 find f(5)​

Answer 1

Answer:

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Yes

Step-by-step explanation:

f(5) = 2(5)-3

= 10-3 = 7

Answer 2

The required answer is 7.

Given: f(x) = 2x - 3

To find: the value of f(5)

Solution:

We know f(x) = 2x - 3

To find the value of f(5), we need to substitute the value of x as 5,

∴ f(5) = 2(5) - 3

     = 10 - 3

     = 7

Answer) f(5) = 7

Functions

• Functions refer to algebraic expressions which can be written in the form of f(x) and can be used to find out the value by replacing the variable with any numerical value.

• F(x) is also called the function of the variable x. It refers to a function or sum which has the variable x in it.

• In this question, we have been provided with the function of x in the form of an expression. To find the value of f(5), we need to find the function with the thought that x is equal to five. Thus, by substituting the value of x as five, we can find the answer.  

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