Solve.The temperature at 4 p.m. on January 2 was -11°F. By 9 p.m. the temperature had risen 16 degrees. Find the temperature at 9 p.m.
A. -5°F
B. 5°F
C. 27°F
D. -27°F
Answer: B
Mathematics
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Determine whether the function is one-to-one.
A. Yes B. No
Mathematics
Solve the problem.The accompanying figure shows the graph of y = -x2 shifted to a new position. Write the equation for the new graph.
A. y = -(x + 6)2 B. y = -(x - 6)2 C. y = -x2 - 6 D. y = -x2 + 6
Mathematics
Evaluate the indicated trigonometric function of the acute angle ?.If ? is an acute angle of a right triangle and if sin ? = 
, then find the value of tan ?.
A. 
B. 
C. 
D. 2
Mathematics
Complete the identity.Complete the reciprocal identity: 
= 
A. tan ? = 
B. sec ? = 
C. cos ? = 
D. csc ? = 
Mathematics