Solve the equation by the square root property.(2x - 1)2 = 9
A. {-2, 1}
B. {-4, 2}
C. {-1, 2}
D. {-2, 4}
Answer: C
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Use the distributive property to write an equivalent expression.4(6y - 8)
A. 24y + 32 B. 6y - 32 C. 24y - 8 D. 24y - 32
Solve the problem.How long will it take for prices in the economy to double at a 4% annual inflation rate? Round to the nearest hundredth when necessary.
A. 14.21 yr B. 28.01 yr C. 17.67 yr D. 23.45 yr
Solve the problem.Suppose that the labor cost for a building is approximated by 
where x is the number of days of skilled labor and y is the number of days of semiskilled labor required. Find the x and y that minimize cost C.
A. x = 36, y = 180 B. x = 8, y = 60 C. x = 16, y = 120 D. x = 60, y = 36
Factor the perfect square trinomial.49x2 - 70xy + 25y2
A. (49x + y)(x + 25y) B. (7x - 5y)(7x + 5y) C. (7x + 5y)2 D. (7x - 5y)2