3/ If f(x) = 2x -5 Find f(x-1)=

Explanation: Here we have function f(x) = 2x - 5

and we're asked to find f(x - 1).

Don't be thrown off if you're asked to plus a variable into a function.

If f(x) = 2x - 5, then f(x - 1) = 2(x - 1) - 5.

Remember to use parenthses when substituting into a function.

So simplifying on the right side, we would distribute the 2

through the parenthses and we have 2x -2 - 5.

Now combining like terms, we have 2x - 7

the simplified form is

step-by-step explanation:

we want to simplify the expression,

let us change the middle bar to a normal division sign to obtain,

we multiply the first fraction by the reciprocal of the second fraction to obtain,

we factor to obtain,

we cancel the common factors to get,

we simplify to get,

the correct answer is b