Factor by any method.30x2 + 25x - 18x - 15
A. (5x - 3)(6x + 5)
B. (30x - 3)(x + 5)
C. (30x + 3)(x - 5)
D. (5x + 3)(6x - 5)
Answer: A
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Solve the quadratic inequality. Write your answer in interval notation.x2 - 10x + 21 ? 0
A. (-?, 3] B. (-?, 3] ? [7, ?) C. [7, ?) D. [3, 7]
Solve.A vendor has learned that, by pricing carmel apples at $1.25, sales will reach 115 carmel apples per day. Raising the price to $2.00 will cause the sales to fall to 82 carmel apples per day. Let y be the number of carmel apples the vendor sells at x dollars each. Write a linear equation that relates the number of carmel apples sold per day, y, to the price x.
A. y = - 
x + 
B. y = -44x + 170
C. y = -44x - 170
D. y = 44x + 60
Factor.4x + 32 + xy + 8y
A. (x + 8)(4 + y) B. (y + 8)(4x + y) C. (x + 8y)(4 + y) D. (y + 8)(x + 4)
Convert the rectangular equation to polar form.x2 + y2 - 4x = 0
A. r = 
B. r = 
C. r = 4 sin ?
D. r = 4 cos ?