Solve.When making a telephone call using a calling card, a call lasting 4 minutes cost $0.85. A call lasting 13 minutes cost $1.75. Let y be the cost of making a call lasting x minutes using a calling card. Write a linear equation that models the cost of a making a call lasting x minutes.
A. y = -0.1x + 1.25
B. y = 0.1x - 11.25
C. y = 10x - 
D. y = 0.1x + 0.45
Answer: D
Mathematics
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A. 
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Identify p, b, and a. Do not solve for the unknown.19% of 13.3 is what?
A. 19; 13.3; a B. p; 13.3; 19 C. p; 19; 13.3 D. 19; b; 13.3
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Determine which fractions are improper.
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A. 
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B. 
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C. 
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D. 
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Factor out the greatest common factor.48x7 + 6x4 - 42x2
A. x2(48x5 + 6x2 - 42) B. 6(8x7 + x4 - 7x2) C. -x2(-48x5 + 6x2 + 42) D. 6x2(8x5 + x2 - 7)
Mathematics