Solve the problem.The function A = Aoe-0.01155x models the amount in pounds of a particular radioactive material stored in a concrete vault, where x is the number of years since the material was put into the vault. If 800 pounds of the material are placed in the vault, how much time will need to pass for only 89 pounds to remain?
A. 195 years
B. 190 years
C. 380 years
D. 200 years
Answer: B
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Draw a valid conclusion from the given premises.It is either day or night. If it is daytime, then the squirrels are scurrying. It is not nighttime.Therefore....
A. Squirrels do not scurry during the day. B. The squirrels are scurrying. C. The squirrels are not scurrying. D. Squirrels do not scurry at night.
Solve the given system of equations by referring to the graphs shown below.y = 
x + 
y = -x - 8
A. (-7, 15)
B. (- 
, -15)
C. (- 
, 15)
D. (-7, -1)
Provide an appropriate response.The type of bond that gives the issuing corporation the right to purchase the bond back prior to its maturity is:
A. participating B. registered C. convertible D. recallable
Combine like terms.9ab + 6 + 2ab + 3
A. 11a + 11b + 9 B. 11ab + 6 + 3 C. 11ab + 9 D. 9ab + 11