Solve the problem.The formula P = 14.7e-0.21x gives the average atmospheric pressure, P, in pounds per square inch, at an altitude x, in miles above sea level. Find the average atmospheric pressure for an altitude of 2.3 miles. Round your answer to the nearest tenth.
A. 7.8 lb/in.2
B. 9.1 lb/in.2
C. 11.0 lb/in.2
D. 8.4 lb/in.2
Answer: B
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State if the vectors a and b are perpendicular, parallel, or neither. If a and b are parallel, state whether they point in the same direction or in opposite directions.a = 
, b = 
A. Parallel, same direction B. Perpendicular C. Parallel, opposite directions D. Neither
Solve the problem.If cos x is replaced by 
and |x| < 0.4, what estimate can be made of the error?
A. |E| < 0.000014222 B. |E| < 0.000034133 C. |E| < 0.000005689 D. |E| < 0.000085333
Provide an appropriate response.Solve the following inequality and write the solution in symbolic and interval notation: 4 - (3x - 7) ? 3(2x - 3) - 7
Fill in the blank(s) with the appropriate word(s).
Determine if the given vectors are orthogonal, parallel, or neither.v = 4i - 2j, w = 4i + 2j
A. Parallel B. Neither C. Orthogonal