Modeling with Periodic Functions Answers

Choose the correct equation.

How many times during this day is the depth at the end of the pier equal to 4 meters?

The graph of these points follows a path resembling a cosine curve reflected across the y-axissine curve reflected across the y-axis✔ cosine curve reflected across the x-axissine curve reflected across the x-axis.

Use the graph to write an equation y = acos[b(x – h)] + k to model the situation.The amplitude is ,

Choose the equation of the graph

The blades of the windmill turn on an axis that is 515✔ 2025 feet from the ground.

On a coordinate plane, a curve starts at (0, 10). It has a maximum of y = 16 and a minimum of y = negative 2.5.

At approximately what time on the next day does the depth first reach 4 meters?

so a = .

The blades of the windmill are 5152025 feet long.

b = pi/2✔ pi2pi

The vertical shift, k, is the length of the blade✔ height of the windmillnumber of rotations per minute.

This amplitude is meters. a = The period is hours. b = The vertical shift is k = meters.

At approximately what time on the next day does the depth first reach 4 meters?

so a = .

The blades of the windmill are ✔ 5152025 feet long.

The period is ,

The blade makes one revolution in 7.51522.530 seconds.

a =