Chat with AIExam 7: Rational Expressions
Exam 1: The Basics329 Questions
Exam 2: Linear Equations and Inequalities310 Questions
Exam 3: Linear Equations and Inequalities in Two Variables155 Questions
Exam 4: Systems of Linear Equations135 Questions
Exam 5: Exponents and Polynomials300 Questions
Exam 6: Factoring295 Questions
Exam 7: Rational Expressions302 Questions
Exam 8: Roots and Radicals215 Questions
Exam 9: Quadratic Equations212 Questions
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A boat travels 39 miles up the river in the same amount of time it takes to travel 51 miles down the same river. If the current is 2 miles per hour, what is the speed of the boat in still water? d r t Upstream Downstream
(Multiple Choice)
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(38)
(38) 
varies directly as the square of 
. If 
when 
find 
when 
is 
.If 
varies directly with 
and if 
when 
find 
when 
is 
. 
= __________
varies directly with and if when find when is . = __________ (Short Answer)
4.9/5 (32)
(32) One car travels 490 miles in the same amount of time it takes a second car traveling 5 miles per hour slower than the first to go 455 miles. What are the speeds of the cars? _____ , _____ miles per hour
(Essay)
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(44) Perform the indicated operation. Reduce your answer to lowest terms. 
(Short Answer)
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(37) 
varies inversely with 
and if 
when 
find 
when 
is 21.Perform the indicated operation. Reduce your answer to lowest terms. 
(Short Answer)
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(33) 
Solve the following equation. Be sure to check each answer in the original equation if you multiply both sides by an expression that contains the variable. 
a = __________
a = __________ (Short Answer)
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(47) Solve the following equation. Be sure to check each answer in the original equation if you multiply both sides by an expression that contains the variable. 
y = __________
y = __________ (Short Answer)
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(36) 
The tension t in a spring varies directly with the distance d the spring is stretched. If the tension is 41 pounds when the spring is stretched 7 inches, find the tension when the spring is stretched twice as far. __________ pounds
(Short Answer)
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(35) 
Solve the following equation. Be sure to check each answer in the original equation if you multiply both sides by an expression that contains the variable. 
(Multiple Choice)
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(40) Solve the following equation. If impossible, answer no solution . Be sure to check each answer in the original equation if you multiply both sides by an expression that contains the variable. 
(Essay)
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(38) 
A water tank can be filled in 12 hours by an inlet pipe and emptied in 30 hours by an outlet pipe. How long will it take to fill the tank if both pipes are left open?
(Multiple Choice)
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(37) Assume 
varies inversely with the square of 
. If 
when 
find 
when 
is 
. 
= __________
varies inversely with the square of . If when find when is . = __________ (Short Answer)
4.8/5 (31)
(31) 
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