Use a calculator to approximate the number. (Round your answer to three decimal places.)
?
A. -1.666
B. 5.474
C. -5.474
D. 0.789
E. 5.605
Answer: D
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Determine whether the relation is a function. Give the domain and range.{(7, -9), (-3, 0), (3, 7), (-1, -3)}
A. function; domain: {-3, -1, 3, 7}; range: {-9, -3, 0, 7} B. not a function; domain: {-3, -1, 3}; range: {-9, -3, 0, 7}
Solve the problem.You are sitting in a classroom next to the wall looking at the blackboard at the front of the room. The blackboard is 13 ft long and starts 3 ft from the wall you are sitting next to. Show that your viewing angle is ? = cot-1 
- cot-1 
.
What will be an ideal response?
Find the intercepts and then graph the line.2x - y = 4
A. x-intercept: (-2, 0); y-intercept: (0, -4)
B. x-intercept: (2, 0); y-intercept: (0, 4)
C. x-intercept: (-2, 0); y-intercept: (0, 4)
D. x-intercept: (2, 0); y-intercept: (0, -4)
Determine the specific solutions (if any) to the equation on the interval [0, 2?).cos 
+ cos 
= 1
A. 
, 
B. 0
C. 
, 
D. 
, 