Solve the problem.Two cars leave an intersection. One car travels north; the other east. When the car traveling north had gone 9 mi, the distance between the cars was 3 mi more than the distance traveled by the car heading east. How far had the eastbound car traveled?
A. 12 mi
B. 9 mi
C. 18 mi
D. 15 mi
Answer: A
Mathematics
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Solve the problem.Find the derivative of the function 
at the point 
in the direction in which the function increases most rapidly.
A. 
B. 
C. 
D. 
Mathematics
Multiply. Then simplify if possible. Assume that all variables represent positive values.
? 
A. 5x
B. 15x2
C. 15
D. 15x
Mathematics
Factor, if possible.6x2 - 5xt - 4t2
A. (6x + t)(x - 4t) B. Prime polynomial C. (2x - t)(3x + 4t) D. (2x + t)(3x - 4t)
Mathematics
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 7.17 less 1.711?
A. Estimate: 5; exact: 5.459 B. Estimate: 6; exact: 6.459 C. Estimate: 5; exact: 5.469 D. Estimate: 6; exact: 6.469
Mathematics