4 Which pair of lines
are parallel?
A) x - 5y = 10; y = 5x – 2
B) x + y = 0; y = x + 7
C) 2x – 3y = 9; 4y = 6x – 20
D) 4x – 8y = 8; y = 2x + 2
E) 9x – 3y = 12; y = 3x – 10
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Which of the following is the equation of a line that passes through the point (1,4) and is parallel to the x-axis a. y=1 b. y=4 c. x=1 d. x=4

The head librarian at the library of congress has asked her assistant for an interval estimate of the mean number of books checked out each day. the assistant provides the following interval estimate: from 740 to 920 books per day. what is an efficient, unbiased point estimate of the number of books checked out each day at the library of congress?

Tamera puts 15/4 gallons of gasoline in her car. which mixed number represents the gallons of gasoline? a) 2 3/4 gallons b) 3 1/4 gallons c) 3 3/4 gallons d) 4 1/2 gallons answer it's worth a lot of points!