At the start of a hike, a hiker was at a elevation of -50 feet (where 0 represents sea level). The hiker climbs at a rate of 15 per minute.

Question

At the start of a hike, a hiker was at a elevation of -50 feet (where 0 represents sea level). The hiker climbs at a rate of 15 per minute. Write an inequality that represents t, the number of minutes after the start of the hike, when the hiker’s elevation was higher than 5 feet above sea level.

in progress 0
Athena 7 months 2021-10-07T10:35:05+00:00 1 Answer 0 views 0

Answers ( )

  1. Ava
    0
    2021-10-07T10:36:47+00:00

    Answer:

    t > 3.66667 minutes

    Step-by-step explanation:

    The height of the hiker at any time is given by

    H(t) = -50 + 15t

    At H = 5 ft,

    5 = -50 + 15t

    15t = 55

    t = (11/3) = 3.6667 minutes; the hiker’s elevation is exactly 5 ft at this point.

    From then on,

    H(t) > 5 ft

    -50 + 15t > 5

    t > 3.6667 minutes

Leave an answer

45:7+7-4:2-5:5*4+35:2 =? ( )