Perform the indicated operations and simplify.(
+ 
)(
- 
)
A. 13 - 2
B. 23
C. 13 - 2
D. 3
Answer: D
Mathematics
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Evaluate or simplify the given expression.cos(2 cos-1 x)
A. 2x2 + 1 B. 2x2 - 1 C. 1 D. -1
Mathematics
Determine whether the equation defines y as a function of x. y = 
A. function B. not a function
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Solve the problem by using addition, subtraction, multiplication, or division as needed.Charles is planning a bicycle trip. If he bikes an average of 57 miles a day, find the maximum distance he can cover in 14 days.
A. 171 miles B. 71 miles C. 798 miles D. 788 miles
Mathematics
Solve the problem.x represents the number of textbooks purchased at $59 per book, and y represents the total amount of money spent on textbooks. What is an equation of the form y = ax for this situation?
A. y = 118x B. y = 30x C. y = 177x D. y = 59x
Mathematics