If f(x) = 2x - 5, then f(4) is

3

Step-by-step explanation:

Just plug in 4 for the variable x and solve the equation.

2(4) - 5 = f(4)

8 - 5 = f(4)

3 = f(4)

f(4)=3

Step-by-step explanation:

This problem asks us to find what f(x), or y is, when x is equal to 4.

We are given:

f(x)=2x-5

Therefore, we ca substitute 4  in for every x.

f(4)=2(4)-5

Solve according to PEMDAS: Parentheses, Exponents, Multiplication, Addition, Subtraction.

First, multiply 2 and 4

f(4)=8-5

Subtract 5 from 8

f(4)=3

If f(x)=2x-5, then f(4) is 3

the number of the people going.

step-by-step explanation:

the cost to buy one movie ticket is $7. if the total cost for the movie is a function of how many people go, then the input is : the number of the people going.

7.25

step-by-step explanation:

we know that 7 equals to 7.0. we also know that 1/4=0.25. so we can add the two together and we get 7.25