Write the improper fraction as a mixed number.
A. 143
B. 143
C. 
D. 28
Answer: D
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Use scientific notation to perform the following operations. Leave your answer in scientific notation form.(7 × 105)(2 × 102)
A. 1.4 × 107 B. 1.4 × 109 C. 1.4 × 1010 D. 1.4 × 108
Solve. If an object is propelled upward from a height of 112 feet at an initial velocity of 96 feet per second, then its height h, in feet, after t seconds is given by the expression 
Factor the expression. After how many seconds will the object hit the ground?
A. -16(t - 1)(t - 7); 1 sec B. -16(t + 1)(t + 7); 7 sec C. -16(t - 1)(t + 7); 1 sec D. -16(t + 1)(t - 7); 7 sec
Use Cramer's rule to solve the linear system.6x + 2y - z = 19 x + 2y + 7z = 719x + y + z = 47
A. (5, 0, 9) B. (4, -2, -9) C. (2, 9, 2) D. (4, 2, 9)
Find the annual straight-line rate of depreciation for the estimated life.30 years
A. 1.7% B. 30% C. 0.3% D. 3.3%