Solve the given applied problems involving variation.Wind resistance or atmospheric drag tends to slow down moving objects. Atmospheric drag varies jointly as an object's surface area A and velocity v. If a car traveling at a speed of 40 mph with a surface area of 37 ft2 experiences a drag of 192.4 N (Newtons), how fast must a car with 40 ft2 of surface area travel in order to experience a drag force of 291.2 N?
A. 53 mph
B. 58 mph
C. 61 mph
D. 56 mph
Answer: D
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Solve the problem.Since life expectancy has increased in the last century, the number of Alzheimer's patients has increased dramatically. The number of patients in the United States reached 4 million in 2000. Using data collected since 2000, it has been found that the data can be modeled by the exponential function 
where x is the years since 2000. Estimate the Alzheimer's patients in 2025. Round to the nearest tenth.
A. 3.9 million B. 4.8 million C. 8.0 million D. 7.8 million
Find the function value.f(x) = 
; f(5)
A. 
B. 
C. 
D. 
Solve the problem.A rectangular plot of land has a length of 
yards and a width of
yards. Find the perimeter of the plot of land.
A. (104 + 
) yards
B. (104
) yards
C. (30
+ 44
) yards
D. (62
+ 44
) yards
Graph the inequality.2x + 5y > -10
A. 
B. 
C. 
D. 