Question

The rate is 320 feet per hour, 320 feethour . The hiking team descended the mountain from 1 pm to 5 pm. The net change is a __________________ of _________________feet.

Answer 1

The correct answer is "decrease, 1,280 feet".

Explanation:

The given values are:

Rate or speed,

= 320 feet per hour

1 pm to 5 pm means,

t = 5 - 1

= 4 hours

Now,

The net change in distance will be:

⇒
`\Delta D=-320* 4 \ feet`

⇒
`=-1280 \ feet`

Thus the above is the correct approach.