Solve the problem.The resistance R of a circuit containing two resistors in parallel is 
= 
+ 
, where the two resistors have resistances R1 and R2. For resistors with R1 = 190 ± 0.5 ohm and 
approximate the error in R.
A. -0.1
B. 0.9
C. 0.3
D. 0.7
Answer: C
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A. 1.625 × 103 B. 1625 C. 1.625 × 10-3 D. 1.625
Find the difference.62 - 0.0674
A. 62.0674 B. 61.9326 C. 62.0326 D. 61.4326
Solve the problem.Tom Quig traveled 250 miles east of St. Louis. For most of the trip he averaged 70 mph, but for one period of time he was slowed to 10 mph due to a major accident. If the total time of travel was 7 hours, how many miles did he drive at the reduced speed?
A. 60 miles B. 35 miles C. 40 miles D. 50 miles
The graph below shows the percentage of students enrolled in the College of Engineering at State University. Use the graph to answer the question.
If f(x) = 15%, what year is represented by x?
A. 1985 B. 1980 C. 1975 D. 1970