In the problem, t is a real number and P = (x, y) is the point on the unit circle that corresponds to t. Find the exact value of the indicated trigonometric function of t.(
, - 
)Find cos t.
A. - 
B. 
C. 
D. - 
Answer: B
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Find the area of the specified region.Shared by the cardioids r = 3(1 + sin ?) and r = 3(1 - sin ?)
A. 
(3? + 8)
B. 
(5? + 8)
C. 
(3? - 8)
D. 169
Use scientific notation to solve the problem.Assume that the volume of the earth is 5 x 1014 cubic meters and the volume of a bacterium is 2.5 x 10-16 cubic meters. If the earth could be filled with bacteria, how many would it contain?
A. 5.0 x 10-31 bacteria B. 5.0 x 1031 bacteria C. 2.0 x 1030 bacteria D. 2.0 x 10-30 bacteria
Express the number in scientific notation.4,200,000,000,000
A. 4.2 × 109 B. 4.2 × 1012 C. 4.2 × 10-12 D. 4.2 × 10-9
Provide an appropriate response.Consider the linear function f(x) = 5x + 20. What is the domain and range of this function? Now, suppose the function represents the relationship between studying time and grades on an exam. The variable x represents the number of hours spent studying and f(x) represents the grade on the exam. Does this change the domain and range? If so, what is the new domain and range and why is it different?
What will be an ideal response?