Solve the problem.The polynomial function I(t) = -0.1t2 + 1.4t represents the yearly income (or loss) from a real estate investment, where t is time in years. After how many years does income begin to decline? Round to the nearest tenth of a year, if necessary.
A. 9.3 years
B. 7 years
C. 6 years
D. 14 years
Answer: B
Mathematics
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Find the outer diameter (the length AB) of the parabolic reflector shown below.
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; 
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A. 
B. 
C. 
D. 
E. 
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Find the graph of the function.
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A. ?
B. ?
C. ?
D. ?
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Determine if the given value of the variable is a solution to the equation.x(2x + 7) = 60; 4
A. not a solution B. solution
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Convert the measurement as indicated.8800 yd to miles
A. 1
mi
B. 5 mi
C. 8
mi
D. 26,400 mi
Mathematics