Question

Evaluate the function f(r) = √r + 1 - 1 at the given values of the independent variable and simplify.

a. f(-1) b. f(24) c. f(x-1)

Answer 1

Explanation:

I'm going to assume you meant to write
`√(r+1)` in the equation as +1 - 1 wouldn't make much sense since they would just cancel out.

a.
`f(-1) = √(-1 + 1) - 1\\ f(-1) = √(0) - 1\\f(-1) = 0-1\\f(-1) = -1`

b.
`f(24) = √(24 + 1) - 1\\ f(24) = √(25) - 1\\f(24) = 5 - 1\\f(24) = 4`

c.
`f(x-1) = √((x-1)+1) -1\\f(x-1) = √(x) - 1`