"! using the table of range of values for each weight class, how can you express the light weight class as an absolute-value? (hint: use w for the average weight in each weight class.)

a. |w - 45| ≤ 5
b. |w - 50| ≤ 5
c. |45 - w| ≥ 5
d. |w - 45| ≥ 5"

The step function g(x) is defined as shown.what is the range of g(x)? ***answer choices in picture.

Ascientist wants to use a model to present the results of his detailed scientific investigation. why would a model be useful? a )because the model makes the concepts easier to understand b) because the model is easy to put together and to use c) because the model prevents other scientists from asking questions d) because the model requires the audience to pay full attention to it i don't know what to choose because between a and d a is much more likely than d because it only wants to get the attention of the audience. i'm confuse.

Acar started driving from city a to city b, distance between which is 620 miles, at a rate of 60 mph. two hours later a truck left city b and started moving towards city a at a rate of 40 mph. how many hours after the truck's departure will the two meet?