Provide an appropriate response.Find the special product: (x + 7)(x - 7)
A. x2 + 49
B. x2 - 49
C. x2 + 14
D. x2 - 14x + 49
Answer: B
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Solve the problem using your calculator.The paired data below consist of the temperatures on randomly chosen days and the amount a certain kind of plant grew (in millimeters). Use a graphing calculator to model the data with a linear function that predicts a plant's growth as a function of temperature.
A. y = 7.30 - 0.112x B. y = -14.6 - 0.211x C. y = 7.30 + 0.122x D. y = 14.6 + 0.211x
Find the infinite sum accurate to three decimal places.
A. -1.036 B. 1.036 C. 0.972 D. -0.972
Solve the problem.The number of VHS movie rentals has declined since the year 2000 due to the popularity of DVDs, as the following table shows. The exponential regression equation was found to be 
where x represents the number of years since 2000. Use a graphing calculator to determine the halving time for the exponential model.
A. 4 years B. 3 years C. 10 years D. 2 years
Solve the system of equations using substitution.
A. x = 2, y = 3; x = 10, y = -5 or (2, 3), (10, -5) B. x = -3, y = 8; x = 5, y = 0 or (-3, 8), (5, 0) C. x = 3, y = 2; x = -5, y = 10 or (3, 2), (-5, 10) D. x = 8, y = -3; x = 0, y = 5 or (8, -3), (0, 5)