Solve the problem.At a local grocery store the demand for ground beef is approximately 50 pounds per week when the price per pound is $4, but is only 40 pounds per week when the price rises to $5.50 per pound. Assuming a linear relationship between the demand x and the price per pound p, express the price as a function of demand. Use this model to predict the demand if the price rises to $5.80 per pound.
A. p = 0.15x + 11.5; 38 pounds
B. p = 11.5x + -0.15; 40 pounds
C. p = - 0.15x + 11.5; 38 pounds
D. p = - 0.15x - 11.5; 40 pounds
Answer: C
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Consider the logistic equation. Find the equilibrium solutions. A detailed direction field is not needed. Assume 
and 
P'(t) = 0.05P
A. P = 400 B. P = 0 and P = 800 C. P = 0 and P = 400 D. P = 0 and P = 200
Complete the following: (i) Find the x- and y-intercepts. (ii) Determine the multiplicity of each zero of f. (iii) Graph y = f(x).f(x) = 2(x + 4)(x + 1)2
A. (i) x-ints are -4 and -1; the y-int is 8
(ii) -4 has multiplicity 1,
-1 has multiplicity 2;
(iii)
B. (i) x-ints are -4 and -1; the y-int is 32
(ii) -4 has multiplicity 2,
-1 has multiplicity 1;
(iii)
C. (i) x-ints are 4 and 1; the y-int is -8
(ii) 4 has multiplicity 1,
1 has multiplicity 2;
(iii)
D. (i) x-ints are -4 and 1; the y-int is 8
(ii) -4 has multiplicity 1,
1 has multiplicity 2;
(iii)
Factor out the greatest common factor.7y + 21
A. 7y B. 21 C. 7(y + 3) D. no common factor (except 1)
Divide. Write the answer in lowest terms and as a whole or mixed number where possible.2 ÷ 
A. 
B. 
C. 1
D. 3