Use transformations to graph the function.y = cos (x - 
)
A. 
B. 
C. 
D. 
Answer: C
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Solve the problem.A rectangular field is to be enclosed on four sides with a fence. Fencing costs $7 per foot for two opposite sides, and $8 per foot for the other two sides. Find the dimensions of the field of area 620 ft2 that would be the cheapest to enclose.
A. 28.5 ft @ $7 by 21.8 ft @ $8 B. 23.3 ft @ $7 by 26.6 ft @ $8 C. 21.8 ft @ $7 by 28.5 ft @ $8 D. 26.6 ft @ $7 by 23.3 ft @ $8
Solve the problem.During the first five months of the year, Len earned commissions of $2820, $2240, $2870, $2710, and $3360. If Len must have average monthly earnings of at least $2810 in order to qualify for retirement benefits, what must he earn in the sixth month in order to qualify for benefits?
A. at least $2860 B. at least $2801 C. at least $2800 D. at least $2810
Express the rational expression in lowest terms.
A. 
B. 
C. 
D. 
Solve the problem.The roof of a building is in the shape of the hyperbola 
where x and y are in meters. Refer to the figure and determine the height h of the outside walls.
a = b = 8 m
A. 17 m B. 39 m C. 111 m D. 10.5 m