A cyclist rides from DeKalb to Rockford, a distance of 150 miles. His return trip takes 2 hours longer because his speed decreases by 20 miles per hour. How fast does he ride each way?
?
A. 30 mph going and 150 mph returning
B. 70 mph going and 50 mph returning
C. 50 mph going and 40 mph returning
D. 50 mph going and 80 mph returning
E. 50 mph going and 30 mph returning
Answer: E
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A. {x
-15 < x < -9}, or (-15, -9)
B. {x
x > 15}, or (15, ?)
C. {x
9 < x < 15}, or (9, 15)
D. {x
x < 9 or x > 15}, or (-?, 9) ? (15, ?)
Use a calculator to evaluate the function at the indicated values. Round your answers to three decimals  figure 1.png)
What will be an ideal response?
Graph the inequality.y ? 5x + 2
A. 
B. 
C. 
D. 
The comparative bar graph below shows the number of male and female athletes at a university over a four-year period. Use the comparative bar graph to answer the question.
Find the increase in the number of female athletes from 2002 to 2003.
A. 200 B. 100 C. 50 D. 75