Solve:
A. 
B. ?
C. ?
D. ?
E. ?
Answer: D
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First, create a scatter plot for the data in the table. Then, use the shape of the scatter plot given to determine if the data are best modeled by a linear function, an exponential function, a logarithmic function, or a quadratic function.
A. 
linear function
B. 
logarithmic function
C. 
exponential function
D. 
quadratic function
Solve the proportion equation.
= 
A. 4.7 B. 21.45 C. 1.51 D. 2.15
Solve the variation problem.The time in hours it takes a satellite to complete an orbit around the earth varies directly as the radius of the orbit (from the center of the earth) and inversely as the orbital velocity. If a satellite completes an orbit 
above the earth in 
at a velocity of 
how long would it take a satellite to complete an orbit if it is at 
style="vertical-align: -4.0px;" /> above the earth at a velocity of 
Use 
as the radius of the earth, and round your answer to the nearest hundredth of an hour.
A. 18.48 hours
B. 9.02 hours
C. 2.71 hours
D. 90.18 hours
Solve.The function 
models the duration of a storm, f(x), in hours, in terms of the diameter of the storm, x, in miles. Use a calculator to determine the duration of a storm with a diameter of 15 miles. Round to the nearest hundredth.
A. 58.09 hr B. 1.08 hr C. 0.27 hr D. 4.07 hr