Question

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

Answer 1

Solution given:

Initial point = -50 ft

Climbing rate = 15 ft/min

Time = t(let)

So Required inequality:

15t-50 > 5

adding 50 on both term

15t> 55

dividing both term by 15

t > 55/15

t>
`3 * (10)/(15)`=

`3 * (40)/(60)`= 3 min 40seconds is your answer

Answer 2

• 15t - 50 > 5

Explanation:

• Initial point = -50 ft
• Climbing rate = 15 ft / min
• Time = t

Required inequality:

• 15t - 50 > 5

Solution:

• 15t > 55
• t > 55/15
• t > 3 10/15 = 3 40/60 min = 3 min 40 seconds