Evaluate the algebraic expression for the indicated variable.-7a2 - 8b + c - 12 for a = 8, b = -3, c = -6
A. -50
B. -442
C. -490
D. -466
Answer: B
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Solve the problem.A marine biologist determines that the size, p, of a population of crabs, after t days can be modeled by the function 
Assuming that this model continues to be accurate, when will this population become extinct? (Round to the nearest day.)
A. 707 days B. 1512 days C. 547 days D. 911 days
Solve the problem. Round your answer to the nearest tenth.Find the work done by a force of 7 pounds acting in the direction of 42° to the horizontal in moving an object 9 feet from (0, 0) to (9, 0).
A. 42.2 ft-lb B. 50.3 ft-lb C. 46.8 ft-lb D. 93.6 ft-lb
Provide an appropriate response.
=
A. 32
B. 
C. 2
D. (64)5
E. 
Solve by graphing.In one U.S. town the annual consumption y of beef (in kg per person) can be estimated by the linear equation 
where x is the number of years since 1975. Graph the equation and use the graph to estimate the beef consumption in the year 1995. 
A. 30 kg per person B. 13 kg per person C. 16 kg per person D. 10 kg per person