Solve the variation problem.The distance that a spring is stretched by a hanging object varies directly as the mass of the object. If an object with a mass of 6 kg stretches a spring 30 cm, find the stretch when the object has a mass of 10 kg.
A. 46 cm
B. 2 cm
C. 6.10 cm
D. 50 cm
Answer: D
Mathematics
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A. 15i - 10i2 B. -10 + 15i C. 10 + 15i D. 15i + 10i2
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Use the periodic compound interest formula to solve the problem.Find the amount in a savings account at the end of 7 years if the amount originally deposited is $8000 and the interest rate is 7% compounded semiannually. Round to the nearest cent.
A. $14,244.51 B. $12,949.56 C. $10,178.23 D. $115,920.00
Mathematics