If f(x) = x2, what are the vertex and the three basic points of the graphs of f(x- 1.75), f(x) - .85, .25 f(x) and .25 f(x- 1.75) + .85. Quickly sketch each graph.

At clock times 11.6, 17.4, 23.2 and 29 sec, we observe water depths of 63.3, 58.9, 56.4 and 55.9 cm.

Sketch a graph of depth vs. clock time.