Convert as indicated.81 oz to the nearest tenth of a pound, if necessary
A. 6.1 lb
B. 15.1 lb
C. 8.1 lb
D. 5.1 lb
Answer: D
Mathematics
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Find the focus and directrix of the parabola.y2 - 16x = 0
A. (0, 4); y = -4 B. (4, 0); x = -4 C. (4, 0); x = 4 D. (4, 0); y = -4
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Find the exact value of the real number y.y = tan-1 (-1)
A. 
B. 
C. 
D. 
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Find x and y.
= 
A. x = 1, y = 6 B. x = 3, y = 6 C. x = 3, y = -4 D. x = 5, y = 6
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Solve.A vendor has learned that, by pricing hot dogs at $1.25, sales will reach 115 hot dogs per day. Raising the price to
will cause the sales to fall to 71 hot dogs per day. Let y be the number of hot dogs the vendor sells at x dollars each. Write a linear equation that models the number of hot dogs sold per day when the price is x dollars each.
A. y = -44x + 170
B. y = -44x - 170
C. y = - 
x + 
D. y = 44x + 60
Mathematics