Solve.Atmospheric pressure (in pounds per square inch) is a function of the altitude above sea level and can be modeled by 
where P is the pressure and a is the altitude above sea level in miles. Find the atmospheric pressure at 3.39 miles above sea level. Round your answer to the nearest hundredth.
A. 0.50 psi
B. 29.96 psi
C. 7.21 psi
D. 11.92 psi
Answer: C
Mathematics
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Simplify the expression. Assume that all variables are positive when they appear.(
+ 
)(
- 
)
A. 8 - z
B. 8 - 2
C. 8 - 2
D. 8z
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Solve. Write the fractions in simplest form.There are 5280 feet in a mile. What fraction of a mile is represented by 330 feet?
A. 
B. 
C. 
D. 
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Solve.Malcom wishes to pay off a car loan of $6936 in 24 months. How large will his monthly payment be?
A. $3468 B. $289 C. $280 D. $271
Mathematics
Find the domain and range of the relation.{(-7, 8), (6, 9), (-2, -6), (-2, -1)}
A. D: {-7, 6, -2, -12}; R: {8, 9, -6, -1} B. D: {8, 9, -6, -1}; R: {-7, 6, -2} C. D: {-7, 6, -2}; R: {8, 9, -6, -1} D. D: {-7, 6, -2, 2}; R: {8, 9, -6, -1}
Mathematics