You drop a rock off a bridge. the rock’s height, h (in feet above the water), after t seconds is modeled by: h = -16t2 + 541. what is the height of the rock after 2 seconds?

On a string instrument, the length of a string varies inversely as the frequency of its vibrations. an 11-inch string has a frequency of 400 cylces per second. find the frequency of a 10-icnch string.

Look at arnold's attempt to solve the equation for b: 3b = 12 b = 3 · 12 b = 36 describe the mistake that arnold made.

Write the sine and cosine values of a, b, respectively, in the figure for (1) and (2) + explanation.