Roberto purchased airline tickets for his family. the tickets cost $1,250. the airline also charged a luggage fee, bringing the total cost to $1,400. what is the percent increase in the cost due to the luggage fee?

the perimeter is increased by a factor of 2

answer

d. 10

explanation

the distance from point y to wx is the height of the triangle.

using pythagoras theorem,

group similar terms to get,

this implies that,

take positive square root of both sides to get,

this implies that,

the answer is 6

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