Graph the quadratic equation.y = -7 - 8x - x2
A. 
B. 
C. 
D. 
Answer: A
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The amount A, in grams, of a radioactive substance remaining after t years is given by the following table. Use an exponential model for these data to determine the half-life of the radioactive substance. That is, determine how long it takes for half of the substance to decay. Round your answer to two decimal places. t 3 4 5 6 A 157.36 154.21 151.13 148.11?
A. 25.46 years B. 34.50 years C. 34.31 years D. 25.00 years
Choose the best answer.The volume of a coffee mug is about
A. 0.3 dam3 B. 0.3 mm3 C. 0.3 L D. 0.3 dm3
Factor completely. If the polynomial is prime, state so.x10 - 25y8
A. (x5 - 5y4)2 B. (x5 - 5y4)(x5 + 5y4) C. (x5 + 5y4)(x5 - 5y2)(x5 + 5y2) D. prime
Identify the vertex of the parabola.y = x2 - 18x + 85
A. (4, 0) B. (4, 9) C. (0, 9) D. (9, 4)