Simplify.
A. - 
B. 
C. 
D. 
Answer: B
Mathematics
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True or false?If somebody tells you that their exam score was 70%, up 80% from the last exam, you would conclude that they must be lying or bad at math, because that is impossible.
A. True B. False
Mathematics
Find the exact value by using a sum or difference identity.tan(- 15°)
A. 
- 2
B. - 
+ 2
C. 
D. 
Mathematics
Simplify the expression. Assume all variables represent positive real numbers.2
- 9
A. -29
B. 25
C. -25
D. -7
Mathematics
Solve the problem.Roberto invested some money at 8%, and then invested $2000 more than twice this amount at 10%. His total annual income from the two investments was $3000. How much did he invest at 10%?
A. $2200 B. $6000 C. $20,000 D. $22,000
Mathematics