When bill bought a marigold plant it was 1 3/4 inch tall after the first week and measure two and 2 5/12inches tall after the second week it was three and 3 1/2inches after week three it was 3 3/4 inches tall assuming the growth of the plant was constant what was the height of the plant at the end of the of week for express your answer as a mixed number in simplest firn