Solve the problem.Hooke's law is applicable to idealized (linear) springs that are not stretched or compressed too far. Consider a nonlinear spring whose restoring force is given by F(x) = 17x - 0.2x3, for |x| ? 8. How much work is done in compressing the spring from its equilibrium position (x = 0) to x = -0.5? Round to two decimal places when appropriate.
A. 4.24 J
B. 339.2 J
C. 678.4 J
D. 2.12 J
Answer: D
Mathematics
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- 
A. 
B. 
C. 
D. 
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Write the number in expanded form.956
A. (9 × 100) + (5 × 101) + (6 × 102) B. (9 × 101) + (5 × 102) + (6 × 103) C. (9 × 102) + (5 × 101) + (6 × 100) D. (9 × 103) + (5 × 102) + (6 × 101)
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Evaluate.Let a = 
, b = 
. Find a + b.
A. 
B. 
C. 
D. 
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Solve the problem.Mardi received an inheritance of 
. She invested part at 7% and deposited the remainder in tax-free bonds at 10%. Her total annual income from the investments was 
. Find the amount invested at 7%.
A. $36,900 B. $29,000 C. $30,000 D. $15,000
Mathematics