Solve the problem.The average daily metabolic rate for a hippopotamus living in the wild can be expressed as a function of weight by 
where w is the weight of the hippopotamus (in kg) and m is the metabolic rate (in kcal/day). Determine dm/dt for a 
hippopotamus that is gaining weight at a rate of 15.75 kg/day.
A. 10,627 kcal/day2
B. 15 kcal/day2
C. 309 kcal/day2
D. 232 kcal/day2
Answer: D
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Find í if a = 13 and b = 20.7.
a. 32.13ø
b. 30.54ø
c. 57.87ø
d. 59.46ø
e. 61.91ø
Solve the system by the elimination method or a combination of the elimination and substitution methods.5x2 + 3xy - 5y2 = -9 x2 - xy - y2 = -5
A. {(-1, 2), (1, -2), (2i, i), (-2i, -i)}
B. {(-1, -2), (1, 2), (2i, -i), (-2i, i)}
C. 
D. 
Solve the problem.What is the slope (or grade) of this hill?
A. 
m
B. 
m
C. 
m
D. 15 m
For the polynomial, list each real zero and its multiplicity. Determine whether the graph crosses or touches the x-axis at each x -intercept.f(x) = 
x(x2 - 3)
A. 0, multiplicity 1
B. 0, multiplicity 1, touches x-axis;
, multiplicity 1, touches x-axis;
-
, multiplicity 1, touches x-axis
C. 
, multiplicity 1, touches x-axis;
-
, multiplicity 1, touches x-axis
D. 0, multiplicity 1, crosses x-axis;
, multiplicity 1, crosses x-axis;
-
, multiplicity 1, crosses x-axis