Solve by the substitution method. x = 6 - y2x + 2y = 12
A. (0, 0)
B. No solution
C. (2, 4)
D. Infinitely many solutions
Answer: D
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Answer appropriately.According to data projections from a wildlife study, a certain region can support a population of 1380 coyotes when the human population in the region is 120,000. The coyote population falls by 15 for every additional 5000 people inhabiting the region. Express the coyote population in the region as a function c(x) where x is the number of people more than 120,000 inhabiting the region.
A. c(x) = - 
+ 121,380
B. c(x) = - 360x + 1380
C. c(x) = -1,725,000x + 1380
D. c(x) = - 
x + 1380
Factor completely. If the polynomial cannot be factored, write "prime."3x2 + 12x + 12
A. 3(3x + 2)(x + 6) B. 3(x - 2)2 C. 3(3x + 2)2 D. 3(x + 2)2
Determine whether the variation model is of the form 
or 
and find k. Then write a model that relates y and x.
x 5 10 15 20 25 y 26 13 
?
A. 
B. 
?
C.
D.
E.
Solve the problem.The velocity of a car is 94 sin t - 55 kilometers per hour on the time interval [0, 2] hours. Assuming that the odometer runs backward when the car has negative velocity, express the odometer reading at the end of the time interval in terms of its reading at the beginning, R0.
A. 30.053 + R0 B. 188 + R0 C. 243.118 + R0 D. 23.118 + R0