Use front-end rounding to round each number. Then, add or subtract the rounded numbers to get an estimated answer. Finally, find the exact answer.What is 6.045 grams from 622.2 grams?
A. Estimate: 594 grams; exact: 616.165 grams
B. Estimate: 694 grams; exact: 626.155 grams
C. Estimate: 594 grams; exact: 616.255 grams
D. Estimate: 594 grams; exact: 616.155 grams
Answer: D
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Use the product and quotient rules, as necessary, to simplify the radical expression.
A. 5
B. 5
C. 
D. 2
Solve the system of equations.
A. x = 4, y = 0, z = -3 B. inconsistent (no solution) C. x = 4, y = -3, z = 0 D. x = 0, y = -3, z = 4
Solve the problem.A DC-10 jumbo jet maintains an airspeed of 600 miles per hour in a southeasterly direction. The velocity of the jet stream is a constant 50 miles per hour from the west. Find the actual speed and direction of the aircraft. (Round the speed and direction to the nearest tenth.)
A. 636.3 mph; S41.8°E B. 565.8 mph; S48.2°E C. 636.3 mph; S48.2°E D. 565.8 mph; N41.4°E
Solve.5x - 3 + 6x - 9 = 4x + 7x - 15
A. Infinite number of solutions B. No solution C. x = 0 D. x = 192