Solve the problem.Roberto invested some money at 7%, and then invested $4000 more than twice this amount at 10%. His total annual income from the two investments was $3910. How much was invested at 10%?
A. $12,000
B. $30,000
C. $26,000
D. $3000
Answer: B
Mathematics
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A. w = 
B. a = 
C. w = 
D. a = 
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Provide an appropriate response.Represent the set -1 < x < 5 on a number line.
A. 
B. 
C. 
D. 
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- 
= - 
A. 8 B. -4 C. -8 D. No solutions
Mathematics
Simplify.
A. 
B. 
C. - 
D. - 
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