No explanation needed if it makes it faster for you!

1. The reference angle for an angle in standard position on the coordinate plane with measure 150is:

30

80

350

-30

Question 17 4.5 pts In the function f(a) = 5.62 cos(0.7x) - 1.93, what is the first positive x value where the function has a minimum? O 4.49 O 1.74 O 8.98 O 6.73Question 19 4.5 pts The water level in a reservoir is at its average level of 7 feet on the 1st day of April, and on the 6th of April the water level is at its maximum level of 10 feet. On April 11th, the water level is once again at its average level. On April 16th, the water level is at its minimum level of 4 feet. On April 21st, the water level is back at its average level. This cycle repeats itself every 20 days. Which sine function will model the situation? O y = 3 sin(72) +7 Oy = 3 sin(20*) +7 Oy = 4sin (Tox) + 3 O y = 7sin(Tx) + 3Question 20 4.5 pts The temperature of the water in an aquarium is regulated so that it cycles regularly between 26 and 30 degrees Celsius over the course of each 24 hours. The equation that models the temperature of 11' the water isy : 2 sin(12 m) + 28. What does the number 2 represent in the context of the problem? 0 The difference between the average temperature and the maximum temperature of the water is 2 degrees Celsius. O The temperature rises by 2 degrees Celsius and then falls by 3 degrees Celsius every 12 hours. 0 The temperature rises and falls 2 times each cycle. 0 The temperature begins to rise 2 hours after the cycle begins. Question 10 4.5 pts Which statement is correct about the parent cosine function? 0 The midline is y=0, the phase shift is O. and the maximum value is y = 1. O The midline is x=0. the amplitude is O, and the maximum value isy = 1. 1 O The midline is y=0, the phase shift is 21r. and the period is 2 O The midline is y=0, the phase shift is g, and the period is 27r. Question 11 4.5 pts Which of the following real-world scenarios can be modeled using sine or cosine? @ The height of water as marked on a pier located at the beach. The water level is tracked over the course of a month. 0 The height of a child from the ages 2 to 10 years old. 0 The amount that is owed on a cell phone contract each month. 0 The concentration of heart medication in the bloodstream in the 8 hours after the medication has been taken. Question 15 4.5 pts How is the function g(@) = 2 cos(a) + 1transformed from the parent cosine function, f(x) = cos(a)? O The midline of f(x) is shifted down by 1 and the amplitude is doubled to create g(x). The midline of f(x) is shifted up by 1 and the period is doubled to create g(x). O The midline of f(x) is shifted up by 2 to create g(x). O The midline of f(x) is shifted up by 1 and the amplitude is doubled to create g(x).Question 4 4.5 pts Determine the sine and cosine ratios for an angle that measures 2 O sin (3 = -1; cos (S) = 0 O sin ( 37 ) = 1; cos (" ) = 0 O sin (5X ) = 0; cos ( 3 ) = 1 O sin ( S" ) = 0; cos ($7 ) = -1Question 9 4.5 pts On the parent sine function, which values represent x-intercepts? O - TT, 0, T O - 2 O 31 0, 2 2 > O 4