For the given compound inequality, state whether intersection or union should be used. Then give the solution set in both interval and graph forms.-7x < 7 and -4x > -16
A. Intersection; (-?, 4)
B. Union; (-?, ?)
C. Intersection; ?
D. Intersection; (-1, 4)
Answer: D
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Solve the problem.You want to purchase a new car. The price of the car is $27,425. The dealer is offering two promotions: You can take a $2000 instant rebate and 5.5% financing (Deal 1) or you can choose 4.5% financing on your entire loan (Deal 2). Calculate the monthly payment of both deals over 60 months and identify which is the better deal.
A. Deal 1: $489; Deal 2: $513; Deal 1 is a better deal B. Deal 1: $486; Deal 2: $511; Deal 1 is a better deal C. Deal 1: $502; Deal 2: $514; Deal 2 is a better deal D. none of these E. Deal 1; $495; Deal 2: $483; Deal 2 is a better deal
Solve.y = x2 - 6x + 9x + y = 15
A. (6, 21), (-1, 16) B. (3, 12) C. (6, 9), (-1, 16) D. (-6, 21), (1, 14)
Add as indicated.(x3y2 + 2x2y3 + 3xy - 4) + (x2y3 + 5x3y2 + 2xy + 5)
A. 6x3y2 + 3x2y3 + 5xy + 1 B. 4x3y2 + 3x2y3 + 5xy + 1 C. 2x3y2 + 7x2y3 + 5xy + 1 D. 6x3y2 + 3x2y3 + 3xy + 1
Factor the polynomial completely.81x2 - 25
A. (9x + 5)2 B. (81x + 1)(x - 25) C. (9x + 5)(9x - 5) D. (9x - 5)2