Simplify the expression by using a sum or difference identity.sin(15m) cos (7m) - cos(15m) sin (7m)
A. cos(22m)
B. sin(22m)
C. cos(8m)
D. sin(8m)
Answer: D
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Find the extreme values of the function subject to the given constraint.
A. Maximum: 8 at 
minimum: -31 at 
B. Maximum: 8 at 
minimum: -4 at 
C. Maximum: 4 at 
minimum: -31 at 
D. Maximum: 4 at 
minimum: -4 at 
Solve the problem.To get credit for graduation, Brittany completed 20 hours of community service. She worked at a soup kitchen for 
of the time. She picked up litter along highways for 
of the time. The rest of the hours she spent tutoring younger children after school. How much time did Brittany spend tutoring?
A. 8 hours
B. 7
hours
C. 9
hours
D. 8
hours
Use the circle graph to solve the problem.The circle graph below gives the inventory of the men's department of a store. 
In which item of apparel does the store have the smallest investment?
A. Shirts B. Underwear C. Suits D. Socks
List the intercepts for the graph of the equation.y = x2 + 1
A. (1, 0), (0, -1), (0, 1) B. (0, 1) C. (0, 1), (-1, 0), (1, 0) D. (1, 0)