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) = 15x - 0.3x3, for |x| ? 8. How much work is done in compressing the spring from its equilibrium position (x = 0) to x = -1.5? Round to two decimal places when appropriate.
A. 16.5 J
B. 32.23 J
C. 345.6 J
D. 172.8 J
Answer: A
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Translate to a proportion and solve. What percent of 168 is 42?
A. 4% B. 26% C. 5% D. 25%
Provide an appropriate response.The function W(g) = 0.44g2 - 0.02g + 8.5 models the average weight in ounces for a mouse who is fed g grams of a special food per day. Use the function to find and interpret W(13). Average Weight of Mouse Fed Special Food
A. 13.96; the average amount of the special food that 13 mice should be fed is 13.96 ounces. B. 184.6; when a mouse is fed an average of 184.6 ounces of the special food per day, its weight will be at least 13 ounces. C. 82.84; 13 mice gained an average of 82.84 ounces per day when fed the special food. D. 82.6; when a mouse is fed 13 grams of the special food per day, its average weight is 82.6 ounces.
Solve the problem. Round rates to the nearest tenth of a percent and dollar amounts to the nearest cent.A local dealer sells baseballs for $25 each. If $6.86 is the markup, what is the cost and the markup on cost?
A. $18.14, 72.6% B. $25, 27.4% C. $18.14, 37.8% D. $31.86, 21.5%
Collect like terms.5p - p
A. -4p B. 5p2 C. 4p D. 6p