Unit 6: periodic functions and trigonometry
lesson 1: exploring periodic data

1. use the given graph. determine the period of the function.

a. 4
b. -2.5
c. 2
d. 8

for questions 2 and 3, determine whether the function is periodic. if it is, find the period.

2.

a. periodic; about 6
b. periodic; about 3
c. periodic; about 12
d. not periodic

3.

a. periodic; about 3
b. not periodic
c. periodic; about 2
d. periodic; about 1 1/2

4. find the period and the amplitude of the periodic function.

a. 1; -1
b. 1; 0.5
c. 2; 0.5
d. 0.5; 2

5. the screen below shows the graph of a sound recorded on an oscilloscope. what are the period and the amplitude? (each unit on the t-axis equals 0.01 seconds.)

a. 0.05 seconds; 4.5
b. 0.05 seconds; 9
c. 0.025 seconds; 9
d. 0.025 seconds; 4.5

! i don't get this at

1.3.25 question suppose 40​% of all voters voted for a particular candidate. to simulate exit polls regarding whether or not voters voted for this​ candidate, five random samples of size 1010 and five random samples of size 10001000 have been generated using technology using a population proportion of 0.400.40​, with the accompanying results. complete parts a through c below. click the icon to view the simulation results. a. observe how the sample proportions of successes vary around 0.400.40. simulation compared to sample prop simulation compared to sample prop 1 ▾ 6 ▾ greater than 0.40 less than 0.40 equal to 0.40 2 ▾ less than 0.40 greater than 0.40 equal to 0.40 7 ▾ greater than 0.40 less than 0.40 equal to 0.40 3 ▾ greater than 0.40 less than 0.40 equal to 0.40 8 ▾ equal to 0.40 greater than 0.40 less than 0.40 4 ▾ greater than 0.40 equal to 0.40 less than 0.40 9 ▾ less than 0.40 greater than 0.40 equal to 0.40 5 ▾ equal to 0.40 less than 0.40 greater than 0.40 10 ▾ equal to 0.40 greater than 0.40 less than 0.40 click to select your answer(s) and then click check answer. 2 parts remaining clear all check answer