Factor by grouping. If prime, so state.12x2 - 15xy + 8xy - 10y2
A. (12x + 2y)(x - 5y)
B. (3x + 2)(4x - 5)
C. (3x - 2y)(4x - 5y)
D. (3x + 2y)(4x - 5y)
Answer: D
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A solution contains 0.54 liters of sulfuric acid. If this represents 12% of the total amount, find the total amount.
A. 5 liters B. 0.5 liters C. 1.5 liters D. 7 liters E. 4.5 liters
Solve the problem.The water reservoir for a city is shaped like a rectangular prism 238 meters long, 188 meters wide, and 18 meters deep at the end of the day, the reservoir is 60% full. How much water must be added overnight to fill the reservoir?
A. 442,966 m3 B. 1,248,358 m3 C. 1,127,549 m3 D. 322,157 m3
Solve the given applied problem.In a particular classroom with 38 students, the rate y at which a rumor spreads is related to the number of people x who have heard the rumor according to the expression 
Determine how many people will have heard the rumor when the spread of the rumor is at its greatest.
A. 114 B. -31 C. 19 D. 69
Write the word phrase as an algebraic expression. Use x to represent the unknown number.53 decreased by a number
A. x - 53
B. 53 + x
C. 
D. 53 - x