Simplify the expression.
+ 
A. 
B. 
C. 
D. 
Answer: A
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Show that the set is infinite by placing it in a one-to-one correspondence with a proper subset of itself. Be sure to show the pairing of the general terms in the sets.{4, 6, 8, 10, ...}
A.
| { | 4, | 6, | 8, | 10, ..., | 2n + 6, | ...} |
| ? | ? | ? | ? | ? |
| { | 6, | 8, | 10, | 12, ..., | 2n + 4, | ...} |
B.
| { | 4, | 6, | 8, | 10, ..., | 2n + 3, | ...} |
| ? | ? | ? | ? | ? |
| { | 6, | 8, | 10, | 12, ..., | 2n + 5, | ...} |
C.
| { | 4, | 6, | 8, | 10, ..., | 2n + 2, | ...} |
| ? | ? | ? | ? | ? |
| { | 6, | 8, | 10, | 12, ..., | 2n + 4, | ...} |
D.
| { | 4, | 6, | 8, | 10, ..., | 2n + 2, | ...} |
| ? | ? | ? | ? | ? |
| { | 5, | 7, | 9, | 11, ..., | 2n + 4, | ...} |
Solve the problem.An economy has three sectors: labor, transportation, and food industries. Suppose the demand on 1 dollar in labor is 35 cents for transportation and 15 cents for food, the demand on 1 dollar in transportation is 55 cents for labor and 27 cents for transportation, and the demand on 1 dollar in food production is 55 cents for labor, 5 cents for transportation, and 33 cents for food. Outside consumer demand for the current production period is 12,000 dollars for labor, 21,000 dollars for transportation, and 12,000 dollars for food. Write an augmented matrix for this economy.
A. 
B. 
C. 
D. 
Solve. The polynomial 3x2 + 4x - 95 represents the area of a parallelogram. Factor the polynomial.
A. (3x + 19)(x + 5) B. (3x - 19)(x - 5) C. (3x + 19)(x - 5) D. (3x - 19)(x + 5)
Several groceries reported differing prices for a bread. The prices are as follows: 2.3, 2.6, 3.2, 2.8, 3.1, 3, 2.2, 2, 2.8. Find the mean, median, and mode of the prices for a bread. Then find the range of the prices. ?
A. mean: $3.67, median: $3.8, mode: $1.8, range: $2.2 B. mean: $2.67, median: $2.8, mode: $2.8, range: $1.2 C. mean: $1.67, median: $4.8, mode: $3.8, range: $3.2 D. mean: $4.67, median: $1.8, mode: $4.8, range: $0.5 E. mean: $0.67, median: $5.8, mode: $0.8, range: $4.2