A sum of $350 is invested at simple interest and amounts to $476 after 3 years. Find i) the total interest
ii) the rate per cent per annum.

the distance from any point on the parabola to the focus is the exact same as the distance from that point to the directrix.

if you could provide answer choices that might allow me to answer the question easier if my above answer isn't an option! (:

1 x=22.52

2: 65/39=604+39x

65x-39x=604

26x=604

x=604/26

×=23.23