Find the exact value of the given expression using a sum or difference formula.
A. 
B. 
C. 
D. 
Answer: B
Mathematics
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Solve.The Santos family saves 0.23 of their income. Express this as a percent.
A. 0.0023% B. 2.3% C. 0.023% D. 23%
Mathematics
Solve the inequality. Express your answer using interval notation.0 < 
< 
A. 
B. 
C. 
D. 
Mathematics
Solve the problem.A new exhibit is scheduled to open at the local museum. Museum officials expect that 9000 people will visit the exhibit in its first week, and that the number of visitors will drop by 40 people per week after the first week during the first 6 months. Find the total number of visitors expected in the exhibit's first 7 weeks.
A. 53,400 visitors B. 61,920 visitors C. 62,160 visitors D. 44,400 visitors
Mathematics
Find the domain, range, and the values of x in the domain of f at which f is discontinuous.
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Mathematics