Find the area. Use 3.14 for ? as necessary.
A. 109.9 cm2
B. 961.625 cm2
C. 3846.5 cm2
D. 219.8 cm2
Answer: B
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Suppose that y is directly proportional to x. Use the given information to find the constant of proportionality k. Then use y = kx to find y for the given value of x.y = 30 when x = 10;
Find y given x = 14.
A. k = - 3; y = - 42
B. k = 5; y = 70
C. k = 3; y = 42
D. k = 300; y = 
Solve the problem.Let angle POQ be designated ?. Angles PQR and VRQ are right angles. If ? = 38°, find the length of OV accurate to four decimal places. 
A. 1.6243 B. 0.7880 C. 0.6157 D. 1.2690
Provide an appropriate response.Give an example of a situation in which a logistic function f(x) = 
would be a more appropriate model than an exponential function f(x) = aekx. Explain why you think the logistic model would be more appropriate.
What will be an ideal response?
Solve the problem.Conservationists tagged 130 black-nosed rabbits in a national forest in 1990. In 1,991, they tagged 260 black-nosed rabbits in the same range. If the rabbit population follows the exponential law, how many rabbits will be in the range 9 years from 1990?
A. 140 B. 133,120 C. 281 D. 66,560