Simplify the expression.
- 
+ 
A. -1
B. 
C. 1
D. 
Answer: C
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Solve the linear programming problem.Stan and Ron's hobby is building birdhouses. The number of wren houses cannot exceed 4 times the number of martin houses. They cannot make more than 80 wren houses or more than 50 martin houses. The total production cannot exceed 100. The profit on a wren house is $5.20 and the profit on a martin house is $7.10. Find the maximum profit.
A. $672.00 B. $355.00 C. $615.00 D. $1395.00
Solve the problem by integration.The general expression for the slope of a curve is 2 cos 2 x sin x. If the curve passes through the point 
, find its equation.
A. y = - 
cos3 x + 5
B. y = - 
sin3 x - 
C. y = 
cos3 x + 5
D. y = - 
sin3 x + 
Solve the problem by using a nonlinear system.In 1979, 
and 
had the same population. The population of 
continued to increase steadily, while the rate of population growth of 
(although initially less than that of 
)
eventually overtook the growth rate of City #2. The populations of two cities are modeled by the following equations: 
: 
; 
: 
, where 
corresponds to the year 1979. In what year after 1979 did the cities have the same population?
A. 1984
B. 1982
C. 1985
D. 1983
Write the ratio of 25 gal in 10 min as a fraction and simplify.
What will be an ideal response?