In square $abcd$, point $m$ is the midpoint of side $ab$ and point $n$ is the midpoint of side $bc$. what is the ratio of the area of triangle $amn$ to the area of square $abcd$? express your answer as a common fraction.

Tony is charged $ 50 and additional $0.15 per miles for renting a car. a) represent the cost of renting a car with an equation,and the determine the cost if he drove it70 miles.b) what would be the cost of a car rental if the car was driven 250 miles? show work