Question

How do you write an inequality and solve given "the sum of a number and -4 is at least 8"?

Answer 1

`(x-4)>=8`

Explanation:

Let x be the number.

We are told that the the sum of `x` and `-4` is at least `8`. Hence this sum is greater or equal to `8`

This is written: `(x-4)>=8`

Hence `x>=12`