Differentiate.f(x) = (5x + 2)2
A. f'(x) = 25x + 4
B. f'(x) = 50x + 20
C. f'(x) = 25x + 10
D. f'(x) = 10x + 4
Answer: B
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Solve.An economist predicts that the buying power B(x) of a dollar x years from now will be given by the formula 
How much will today's dollar be worth in 3 years? Round the answer to the nearest cent.
A. $0.03 B. $0.70 C. $1.39 D. $0.90
Provide an appropriate response.The expression 
contains parentheses. Are they necessary? Explain.
What will be an ideal response?
Solve the problem.Sue buys a house which has a rectangular yard measuring 14.9 meters by 15.6 meters. In one corner of the yard is a rectangular shed measuring 3.5 meters by 2.9 meters. Sue intends to grow grass in the whole of the yard. What is the area of the yard excluding the shed?
A. 3.5 m2 B. 2222.9 m2 C. 232.44 m2 D. 222.29 m2
Make the indicated temperature conversion. Round answers to one decimal place if necessary.Convert 41°C to Fahrenheit.
A. 41.8°F B. 6.8°F C. 42.4°F D. 105.8°F