Use the echelon method to solve the system of two equations in two unknowns.4x - 2y = 6 20x - 10y = 24
A. 
B. (1, 0)
C. 
D. No solution
Answer: D
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Divide. Write with positive exponents.
A. 2x3 - 4x2 - 8
B. -2x3 + 7x2 + 8 - 
C. 2x3 - 7x2 - 8
D. 2x3 - 7x2 - 8 + 
In business, equipment is often depreciated using the double declining-balance method. In this method, a piece of equipment with a life expectancy of N years, costing $C, will depreciate to a value of $V in n years, where n is given by the formula
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A word processor worth $460 when new had a life expectancy of 12 years. If it is now worth $40, how old is it?
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Please enter your answer as a number without the units, rounded to one decimal place.
Fill in the blank(s) with the appropriate word(s).
Given the values of x and y, find an equation of variation in which y varies directly as x.y = 20.72, when x = 5.6
A. y = 3.7x B. x = 3.7y C. y = 5.6x D. y = 0.27x
Subtract.
A. 6.384 B. 7.384 C. 7.000 D. 6.416