Question

How do you evaluate `sqrts+absr` given r=-3, s=4, t=-7?

Answer 1

See a solution process below:

Explanation:

The variable `t` is not use in the expression in the problem therefore we can ignore it in this problem.

To evaluate `sqrt(s) +abs(r)` we need to substitute:
- `color(red)(-3)` for each occurrence of `color(red)(r)`
- `color(blue)(4)` for each occurrence of `color(blue)(s)`

`sqrt(color(blue)(s)) + abs(color(red)(r))` becomes:

`sqrt(color(blue)(4)) + abs(color(red)(-3)) => 2 + 3 => 5`

Answer 2

`5`

Explanation:

`"substitute the given values into the expression"`

`sqrtcolor(red)(4)+|color(blue)(-3)|=2+3=5`

`"note that the absolute value always returns a positive"`
`"value"`