Question

How do you evaluate `5x+2z` if w=6, x=0.4, y=1/2, z=-3?

Answer 1

See the entire solution process below:

Explanation:

To evaluate the expression we need to substitute `color(red)(0.4)` for `color(red)(x)` and `color(blue)(-3)` for `color(blue)(z)` in the expression and then calculate the result. Variables `w` and `y` are not used and not necessary for this problem:

`5color(red)(x) + 2color(blue)(z)` becomes:

`(5 * color(red)(0.4)) + (2 * color(blue)(-3)) ->`

`2 + (-6) ->`

`2 - 6 ->`

`-4`