Solve the system of equations by the addition method.
A. (19, 5)
B. (5, 19)
C. infinite number of solutions
D. no solution
Answer: B
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Provide an appropriate response.A gear with 80 teeth turns at 30 rpm on another gear with 100 teeth. What is the speed of the second gear?
A. 267 rpm B. 0.42 rpm C. 24 rpm D. 37.5 rpm
Use the information given in the table to solve the problem.The table gives the Consumer Price Index for selected years.
What is the percent change (to the nearest tenth of a percent) in prices from 1960 to 1975?
A. 122.8 % B. 114 % C. 112.8 % D. 117 %
Solve the problem.Assume it costs 25 cents to mail a letter weighing one ounce or less, and then 20 cents for each additional ounce or fraction of an ounce. Let L(x) be the cost of mailing a letter weighing x ounces. Graph y = L(x).
A.
B. 
C. 
D.
Subtract.8579 - 144
A. 8435 B. 8427 C. 435 D. 8347