Write the given statement as an equation.The perimeter P of an equilateral triangle varies directly as the side s.
A. P = 3s2
B. P = 3s
C. P = 
D. P = ks
Answer: D
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Find the exact value of the trigonometric function. Do not use a calculator or tables.cos 
A. 
B. - 
C. - 
D. - 
Complete the table for the function and find the indicated limit.Find 
A. 13.31; 13.9301;13.993; 14.007; 14.0701; 14.71
f(x) = 14
B. 11.81; 12.4301;12.493; 12.507; 12.5701; 13.21
f(x) = 12.5
C. 12.31; 12.9301;12.993; 13.007; 13.0701; 13.71
f(x) = 13
D. 12.51; 13.1301;13.193; 13.207; 13.2701; 13.91
f(x) = 13.2
Use the graph of the relation to identify the domain and range.x = y2 - 7
A. domain: (-?, ?) range: (-?, ?) B. domain: [-7, 7] range: (-?, ?) C. domain: [-7, ?) range: (-?, ?) D. domain: (-?, ?) range: [-7, ?)
Solve for x using an equivalent exponential expression.The function f(x) = 300(0.5)x/50 models the amount in pounds of a particular radioactive material stored in a concrete vault, where x is the number of years since the material was put into the vault. Find the amount of radioactive material in the vault after 
Round to the nearest whole number.
A. 131 pounds B. 180 pounds C. 168 pounds D. 125 pounds