Use two equations in two variables to solve the following problem.A rancher raises five times as many cows as horses. If he has 144 animals (cows and horses only), how many cows does he have?
A. 120 cows
B. 100 cows
C. 160 cows
D. 110 cows
E. 90 cows
Answer: A
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Determine whether the given geometric series is convergent or divergent, and find the sum if it is convergent.5 + 20 + 80 + 320 + ...
A. Convergent; S = 425 B. Convergent; S = 320 C. Divergent D. Convergent; S = 325
The box plots represent a comparison of the annual salaries of a group of opera and a group of country western singers respectively.
Which of the following represents the five number summary for the salaries of the opera singers?
A. Min = $20,000, Q1 = $40,000, Q2 = $55,000, Q3 = $80,000, Max = $100,000 B. Min = $0, Q1 = $40,000, Q2 = $45,000, Q3 = $55,000, Max = $65,000 C. Min = $40,000, Q1 = $45,000, Q2 = $55,000, Q3 = $65,000, Max = $80,000 D. Min = $45,000, Q1 = $55,000, Q2 = $55,000, Q3 = $55,000, Max = $65,000 E. none of these
Solve the problem.Two friends decide to meet in Chicago to attend a Cub's baseball game. Rob travels 
in the same time that Carl travels 
Rob's trip uses more interstate highways and he can average 
more than Carl. What is Rob's average speed?
A. 31 mph B. 35 mph C. 23 mph D. 27 mph
A farmer drives a tractor from one town to another, a distance of 200 kilometers. He drives 10 kilometers per hour faster on the return trip, cutting 1 hour off the time. How fast does he drive each way? ?
A. 70 kph going and 90 returning B. 40 kph going and 100 returning C. 70 kph going and 50 returning D. 40 kph going and 50 returning E. 50 kph going and 60 returning