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an airplane pilot over the pacific sights a coral reef at an angle of depression of 10 degrees. at this time, the horizontal distance from the airplane to the coral reef is 3,172 meters.
(picture attached: )

x = 559.31 m

Step-by-step explanation:

Given in the question,

horizontal distance from airplane to the coral reef = 3172 m

outer angle of depression = 10°

inner angle of depression = 90 - 10

                                           = 80°

It is a question of right angle triangle, we will use trigonometry identity to solve the question

Tan(80) = 3172 / x

x = 3172 / Tan(80)

x = 559.31 m

let x be the money she spent so that she can earn the free t-shirt.

since, she already spent $112.49

⇒

also, as per the statement: jennifer must spend $250 or more in order to qualify for a free t-shirt at the store.

then,

we have an inequality i.,e

subtract 112.49 from both sides we get;

therefore, $137. 51 more money does jennifer need to spend so that she can earn the free t-shirt

explanation:

step-by-step explanation: