Reuben deposits $700 into an account that pays simple interest at a rate if 5% per year. how much interest will he be paid in the first 3 years.

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,

tip $2.90

total $17.40