Use a sum or difference identity to find the exact value.sin 
cos 
+ cos 
sin 
A. 
B. 
C. 1
D. 
Answer: B
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Evaluate the integral using the given substitution.
dy , u = y6 + 5y3 + 5
A. 
(y6 + 5y3 + 5)4 + C
B. 
(y6 + 5y3 + 5)4(10y4 + 10y) + C
C. 
(y6 + 5y3 + 5)4 + C
D. 9(y6 + 5y3 + 5)2 + C
Identify the figure as a line, segment, or ray. Then use the correct symbol to name the figure.
A. 
B. line segment; 
C. line; 
D. line; 
Solve the problem.Let f(x) compute the cost of a rental car after x days of use 
per day. What does 
compute?
A. The cost of rental for x days B. The cost of rental for 24 days C. The number of days rented for x dollars D. The number of days rented for 24 dollars
Solve the problem.You have 260 feet of fencing to enclose a rectangular region. What is the maximum area?
A. 4225 square feet B. 4221 square feet C. 67,600 square feet D. 16,900 square feet