The line graph shows the recorded hourly temperatures in degrees Fahrenheit at an airport. 
During which two hour period did the temperature increase the most?
A. 10 a.m. to 11 a.m.
B. 12 p.m. to 2 p.m.
C. 10 a.m. to 12 p.m.
D. 9 a.m. to 11 a.m.
Answer: D
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Solve the inequality and graph the solution set.| 7x - 6 | ? 8
A. x ? - 2 or x ? 
; 
? 
B. x ? 2 ; 
C. x ? - 
or x ? 2 ; 
? 
D. - 
? x ? 2 ; 
Solve the problem.The manager of a candy shop sells chocolate covered peanuts for $5 per pound and chocolate covered cashews for $14 per pound. The manager wishes to mix 80 pounds of the cashews to get a 
mixture that will sell for $7 per pound. How many pounds of peanuts should be used?
A. 360 lb B. 180 lb C. 280 lb D. 140 lb
Use the Half-angle Formulas to find the exact value of the trigonometric function. cos 75°
A. - 
B. 
C. 
D. - 
Multiply.(7x + 9)2
A. 7x2 + 126x + 81 B. 49x2 + 126x + 81 C. 7x2 + 81 D. 49x2 + 81