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 $4120. How much was invested at 10%?
A. $6000
B. $28,000
C. $3000
D. $30,000
Answer: D
Mathematics
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A. 
B. 
C. 
D. 
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Multiply.(-49)(0)(-6)(3)
A. 1 B. -49 C. 49 D. 0
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Identify the vertex of the parabola.y = x2 + 3
A. (0, 3) B. (3, 0) C. (-3, 0) D. (0, -3)
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Use front-end rounding to round each number. Then, multiply the rounded numbers to get an estimated answer. Finally, find the exact answer.estimateexact
?
A. Estimate: 800; exact: 89.1918 B. Estimate: 400; exact: 891.918 C. Estimate: 400; exact: 89.1918 D. Estimate: 800; exact: 891.918
Mathematics