Solve the problem.Roberto invested some money at 7%, and then invested $5000 more than twice this amount at 9%. His total annual income from the two investments was $3700. How much was invested at 9%?
A. $3100
B. $15,000
C. $26,000
D. $31,000
Answer: D
Mathematics
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Multiply.(5 - 
)(2 - 
)
A. 10 - 7
+ x
B. 10 - 7
- x
C. 10 - 6
D. 10 - 6x
Mathematics
Classify the following as true or false.The product of a non-zero rational number and an irrational number is irrational.
A. True B. False
Mathematics
Write the whole number in word form.24,807
A. Two million, forty-eight thousand, seven B. Twenty-four thousand, eight hundred seven C. Two thousand, four hundred eighty-seven D. Two hundred forty-eight thousand, seven
Mathematics
Solve the system using the inverse method.
A. x = -1, y = 5, z = 0 B. x = 11, y = 0, z = 0 C. x = -47, y = 65, z = -24 D. x = -41, y = 76, z = -24
Mathematics