The quantity y varies directly as the square of r. When x = 3, y = 45. What
is y when x = 4?

Find the value of 1715⋅211.though these numbers aren't quite as nice as the ones from the example or the previous part, the procedure is the same, so this is really no more difficult. give the numerator followed by the denominator, separated by a comma.

The sum of two numbers is 12 and their difference is 18 what are the two numbers

The graph shown is the graph of which function?