Solve.Find the length of a rectangular lot with a perimeter of 98 m if the length is 7 m more than the width. (P = 2L + 2W)
A. Length: 21 m
B. Length: 49 m
C. Length: 28 m
D. Length: 56 m
Answer: C
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Find the period of the function.y = cos 3x
A. 1
B. 2?
C. 3
D. 
The following graph shows the populations of the metropolitan areas of City X and City Y over six years. 
If equations of the form y = f(t) were determined that modeled either of the two graphs, then the variable t would represent 
and the variable y would represent 
.
A. City Y; City X B. year; population (in millions) C. population (in millions); year D. City X; City Y
Minimize the function
?
?
subject to the constraint 
?
A. 
B. ?
C. ?
D. ?
E. ?
Solve the problem.For children aged 5 to 15 years, the number of hours watching cartoons per week can be estimated by the function 
where s is the age of the child. Find the domain of the function.
A. {
x is a real number}
B. {
2 ? x ? 13}
C. {
5 ? x ? 15}
D. {
1.1 ? x ? 13}