Solve the problem. Round as appropriate.The gravitational attraction A between two masses varies inversely as the square of the distance between them. The force of attraction is 2.25 lb when the masses are 4 ft apart, what is the attraction when the masses are 6 ft apart?
A. 2 lb
B. 4 lb
C. 1 lb
D. 3 lb
Answer: C
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A partial payment is made on the date(s) indicated. Use the United States Rule to determine the balance due on the note at the date of maturity. (The Effective Date is the date the note was written.) Assume the year is not a leap year. 
A. $5163.74 B. $5047.15 C. $5208.39 D. $5220.96
Translate the sentence into an equation and solve it.Twenty-nine minus eight times a number is equal to five. Find the number.
A. 29 - 8n = 5, n = 4 B. 8n - 29 = 5, n = 4 C. 29 - 8n = 5, n = 3 D. 8n - 29 = 5, n = 6
Factor completely. If the polynomial cannot be factored, say it is prime.8x2 - 28x - 16
A. 4(2x - 1)(x + 4) B. (8x - 4)(x + 4) C. 4(2x + 1)(x - 4) D. prime
Perform the indicated operations.(9x6 - 9x5 - 2x4 + 2) + (4x6 - 7x5 + 9x4 - 3)
A. 13x12 - 16x10 + 7x8 - 1 B. -5x6 - 5x5 + 6x4 - 5 C. 13x6 - 16x5 + 7x4 - 1 D. 4x30 - 1