Suppose u and v are differentiable functions of x. Use the given values of the functions and their derivatives to find the value of the indicated derivative.u(2) = 7, u '(2) = 4, v(2) = -1, v '(2) = -5.
(2u - 4v) at x = 2
A. 28
B. 18
C. 10
D. -12
Answer: A
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Solve the problem.Suppose the sales of a particular brand of appliance are modeled by the linear function 
where S(x) represents the number of sales in year x, with 
corresponding to 2010. Find the number of sales expected in 2020 if this trend continues.
A. 13,190 B. 13,400 C. 6700 D. 6490
Solve.The height in meters of women of a certain tribe is approximated by 
where t is the woman's age in years and 
Estimate the height (to the nearest hundredth of a meter) of a woman of the tribe 4 years of age.
A. 1.12 m B. 0.77 m C. 0.52 m D. 0.96 m
Provide an appropriate response.An employee's gross earnings for a month are $1,750. If the net pay is $1,273, what percent of the gross pay are the total deductions? (nearest whole percent)
Fill in the blank(s) with the appropriate word(s).
Solve the initial value problem.
= x 
4, y(0) = 0
A. y = 
5 - 
B. y = 
5
C. y = 
5
D. y = 
5 - 