Represent the quantity by an integer.$115 loss
A. 115
B. -115
Answer: B
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Write the system of equations that corresponds to the augmented matrix.
A. 
B. 
C. 
D. 
The following circle graph displays Chris and Mary Smith's monthly $2900 family budget. Use the circle graph to answer the question. 
What is the ratio of money spent on utilities to the total amount of the monthly budget?
A. 
B. 
C. 
D. 
Factor completely. If the polynomial cannot be factored, write "prime."9y4 - 49
A. (3y2 - 7)2 B. (3y2 + 7)2 C. (9y2 + 1)(y2 - 49) D. (3y2 + 7)(3y2 - 7)
Solve the problem.In the formula A = Iekt, A is the amount of radioactive material remaining from an initial amount I at a given time t, and k is a negative constant determined by the nature of the material. A certain radioactive isotope decays at a rate of 0.275% annually. Determine the half-life of this isotope, to the nearest year.
A. 182 yr B. 3 yr C. 252 yr D. 109 yr