Solve the problem.Find (g?f)(3) when f(x) = 7x + 9 and g(x) = 2/x.
A. 
B. 20
C. 
D. 
Answer: A
You might also like to view...
Solve. Round your results to four decimal places.Use the Euler method with dx = 0.2 to estimate y(3) if y' = -y/x and y(2) = 4. What is the exact value of 
A. y ? 2.3158, exact value is 4.0000 B. y ? 2.5714, exact value is 2.0000 C. y ? 1.4737, exact value is 8.0000 D. y ? 1.0526, exact value is 1.5000
Find the diameter of the circle.
A. 
B. 
C. 
D. 
Write a proportion that models the situation described. Then, solve the proportion for x.If at a given speed a car can travel 162.4 miles on 7 gallons of gasoline, then the car can travel x miles on 119 gallons of gasoline at that speed.
A. 
= 
; x = 2768.2 miles
B. 
= 
; x = 2768.2 miles
C. 
= 
; x = 2760.8 miles
D. 
= 
; x = 2760.8 miles
Solve the problem.The cost C of an international call is given by the formula 
where 
Find the duration of a call that costs $5.57 by replacing C in the formula with 5.57 and solving the resulting equation.
A. 23 minutes B. 7 minutes C. 16 minutes D. 30 minutes