Factor completely. If the polynomial is prime, state so.9x2 + 42x + 49
A. (3x + 7)(3x - 7)
B. (3x - 7)2
C. (3x + 7)2
D. (9x + 1)(x + 49)
Answer: C
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For a certain epidemic the number N of new cases expected in a day depends on the number t of days since the outbreak began. The relationship is
.
?
What is the greatest number of new cases that occur on a day, and on what day does that happen? Round both answers to the nearest whole number.
A. A maximum of 41 new cases occurs on day 24. B. A maximum of 21 new cases occurs on day 38. C. A maximum of 24 new cases occurs on day 41. D. A maximum of 38 new cases occurs on day 21.
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. $925.47 B. $922.11 C. $906.60 D. $920.43
Solve.In a statistics class, the following test scores were recorded for a student: 84, 79, 77, 73, 79, 65, 75. Find the mean, median, and mode for the data.
A. mean: 77, median: 73, mode: 79 B. mean: 76, median: 73, mode: 84 C. mean: 77, median: 76, mode: 84 D. mean: 76, median: 77, mode: 79
Solve the problem.Suppose that a family has 5 children and that the probability of having a girl is 
. What is the probability of having exactly two girls and three boys?
A. 0.6252 B. 0.0312 C. 0.0625 D. 0.3125