Evaluate the indicated function for 
and 
.
?
?
A. 12
B. -10
C. 7
D. 14
E. 10
Answer: E
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A straight road makes an angle, A, of 16° with the horizontal. When the angle of elevation, B, of the sun is 59°, a vertical pole beside the road casts a shadow 7 feet long parallel to the road, see figure. Approximate the length of the pole. Round answer to two decimal places.
What will be an ideal response?
Identify the group of terms as like or unlike.j, k
A. Unlike B. Like
Simplify.
A. 
B. 
C. 2
D. 
Solve the problem.The pH of a solution ranges from 0 to 14. An acid has a pH less than 7. Pure water is neutral and has a pH of 7. The pH of a solution is given by 
where x represents the concentration of the hydrogen ions in the solution in moles per liter. Find the pH if the hydrogen ion concentration is 
A. 3.19 B. 3.81 C. 2.81 D. 2.19