Question

If f(x)=(x+1)(x-2)/(x-1),then calculate f(7). round answers to two decimal places.

Answer 1

f(7) ≈ 6.67

Explanation:

To evaluate f(7), substitute x = 7 into f(x) , that is

f(7) =
`((7+1)(7-2))/(7-1)` =
`(8(5))/(6)` =
`(40)/(6)` ≈ 6.67 ( to 2 dec. places )