PLEASE HELP

What are the period and amplitude of the function?

Identify the period and amplitude of a periodic function.

A. period: 4; amplitude: 3

B. period: 4; amplitude: 2.5

C. period: 5; amplitude: 3

D. period: 5; amplitude: 2.5

Select the lengths in centimeters that would form a right triangle

Which situation can be modeled by the inequality 5 + 10w ≥ 45? a. you start with $5 and save $10 a week until you have at least $45. b.you start with 5 baseball cards and purchase 10 cards every week until you have at most 45 cards. c.you start with 5 water bottles and purchases cases of 10 water bottles each until you have a total of 45 water bottles. d.you spend $5 plus $10 per week until you have less than $45.

In the diagram, bc¯¯¯¯¯∥de¯¯¯¯¯ . what is ce ? enter your answer in the box.