Chat with AIExam 2: Equations and Inequalities
Exam 1: Fundamental Concepts of Algebra150 Questions
Exam 2: Equations and Inequalities142 Questions
Exam 3: Functions and Graphs147 Questions
Exam 4: Polynomial and Rational Functions147 Questions
Exam 5: Inverse, Exponential, and Logarithmic Functions144 Questions
Exam 6: The Trigonometric Functions150 Questions
Exam 7: Analytic Trigonometry150 Questions
Exam 8: Applications of Trigonometry144 Questions
Exam 9: Systems of Equations and Inequalities147 Questions
Exam 10: Sequences, Series and Probability150 Questions
Exam 11: Topics From Analytic Geometry150 Questions
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As a particle moves along a straight path, its speed v (in cm/sec) at time t (in seconds) is given by the equation below. For what subintervals of the time interval [0, 8] will its speed be at least 15 cm/sec? ![As a particle moves along a straight path, its speed v (in cm/sec) at time t (in seconds) is given by the equation below. For what subintervals of the time interval [0, 8] will its speed be at least 15 cm/sec?](https://storage.examlex.com/TB8634/11eb7cb3_b064_fb44_acd2_732ea9745cf2_TB8634_11.jpg)
(Multiple Choice)
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(88) As a particle moves along a straight path, its speed v (in cm/sec) at time t (in seconds) is given by the equation below. For what subintervals of the time interval [0, 8] will its speed be at least 4 cm/sec? ![As a particle moves along a straight path, its speed v (in cm/sec) at time t (in seconds) is given by the equation below. For what subintervals of the time interval [0, 8] will its speed be at least 4 cm/sec?](https://storage.examlex.com/TB8634/11eb7cb3_b061_9f5a_acd2_c10dcb984e94_TB8634_11.jpg)
(Multiple Choice)
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(75) A stained-glass window is being designed in the shape of a rectangle surmounted by a semicircle, as shown in the figure. The width of the window is to be 3 feet, but the height h is yet to be determined. If 27 ft 2 of glass is to be used, find the height h. 
(Multiple Choice)
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(76) 
Two surveyors with two-way radios leave the same point at 9:00 A.M., one walking due south at 4 mi/hr and the other due west at 2 mi/hr. How long can they communicate with one another if each radio has a maximum range of 2.24 miles? Round the answer to the nearest minute.
(Multiple Choice)
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(76) 
as an interval.A consumer is trying to decide whether to purchase car A or car B. Car A costs $10,000 and has an mpg rating of 30, and insurance is $500 per year. Car B costs $11,600 and has an mpg rating of 50, and insurance is $550 per year. Assume that the consumer drives 15,000 miles per year and that the price of gas remains constant at $1.25 per gallon. Based only on these facts, determine how long it will take for the total cost of car B to become less than that of car A.
(Multiple Choice)
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(79) British sterling silver is a copper-silver alloy that is 7.5% copper by weight. How many grams of pure copper and how many grams of British sterling silver should be used to prepare 226 grams of a copper-silver alloy that is 13% copper by weight?
(Multiple Choice)
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Write the expression 
in the form 
, where a and b are real numbers.
in the form , where a and b are real numbers. (Multiple Choice)
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(84) 
Write the expression 
in the form 
, where a and b are real numbers.
in the form , where a and b are real numbers. (Multiple Choice)
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(82) 
Two surveyors with two-way radios leave the same point at 9:00 A.M., one walking due south at 4 mi/hr and the other due west at 2 mi/hr. How long can they communicate with one another if each radio has a maximum range of 2.98 miles? Round the answer to the nearest minute.
(Multiple Choice)
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