Find the perimeter of the triangle.a scalene triangle whose sides are 18 cm, 9 cm, and 19 cm
A. 37 cm
B. 85.5 cm
C. 46 cm
D. 45 cm
Answer: C
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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
Identify intervals on which the function is increasing, decreasing, or constant.g(x) = 2 - (x- 7)2
A. Increasing: (-?, 7); decreasing: (7, ?) B. Increasing: (-?, -7); decreasing: (-7, ?) C. Increasing: (-?, 2); decreasing: (2, ?) D. Increasing: (2, ?); decreasing: (-?, 2)
?Suppose the resident population P(in millions) of the United States can be modeled by 
, 
, where 
/> corresponds to 1800. Analytically find the minimum and maximum populations in the U.S. for 
.
?
A. ?The population is minimum at 
and maximum at 
.
B. ??The population is minimum at and maximum at 
.
C. ???The population is minimum at 
and maximum at 
.
D. ??The population is minimum at 
and maximum at 
.
E. ?The population is minimum at 
and maximum at 
.
Solve the problem.The perimeter of a rectangular garden is to be 50 ft. Find the length if the width is 5 ft. (Use P = 2l + 2w)
A. 20 ft. B. 19 ft. C. 18 ft. D. 17 ft.