Decide whether the given statement is always true or not always true.If B ? A, then A ? B = A
A. Not always true
B. Always true
Answer: A
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Find the extreme values of the function subject to the given constraint.
A. Maximum: none; minimum: 
at 
B. Maximum: none; minimum: 
at 
C. Maximum: none; minimum: 
at 
D. Maximum: none; minimum: 
at 
Solve the problem.The temperature of water in a certain lake on a day in October can be determined by using the model 
where x is the number of feet down from the surface of the lake and y is the Celsius temperature of the water at that depth. Based on this model, how deep in the lake is the water 8 degrees? Round to the nearest foot.
A. 43 ft B. 13 ft C. 69 ft D. 32 ft
Solve the problem.Determine a polynomial that represents the area of the figure.
4x + 7
A. 16x2 + 56x - 49 B. 16x2 + 49 C. 16x2 - 49 D. 16x2 - 56x + 49
Determine whether the relation represents a function. If it is a function, state the domain and range.{(2.44, 3.24), (2.444, -3.2), (
, 0), (2.33, -2)}
A. function
domain: {3.24, -3.2, 0, -2}
range: {2.44, 2.444, 
, 2.33}
B. function
domain: {2.44, 2.444, 
, 2.33}
range: {3.24, -3.2, 0, -2}
C. not a function