Solve the problem using the elimination method.Best Rentals charges a daily fee plus a mileage fee for renting its cars. Barney was charged $129 for 3 days and 300 miles, while Mary was charged $230 for 5 days and 600 miles. What does Best Rental charge per day and per mile?
A. $15 per day and 28? per mile
B. $28 per day and 15? per mile
C. $29 per day and 16? per mile
D. $27 per day and 16? per mile
Answer: B
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Find the curvature of the curve r(t) = 2 sin 7ti+ 2 cos 7tj+2tk. Select the correct answer.
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Evaluate the series, if it converges.
A. Does not converge.
B. - 
C. 
D. 
Solve the problem.Michael decides to walk to the mall to do some errands. He leaves home, walks 5 blocks in 16 minutes at a constant speed, and realizes that he forgot his wallet at home. So Michael runs back in 12 minutes. At home, it takes him 3 minutes to find his wallet and close the door. Michael walks 3 blocks in 12 minutes and then decides to jog to the mall. It takes him 10 minutes to get to the mall which is 4 blocks away. Draw a graph of Michael's distance from home (in blocks) as a function of time. 
What will be an ideal response?
Convert the measure to its alternate U.S. or metric form. Write improper fractions as mixed numbers for U.S. measures and as decimals for metric measures.Convert 66.5 liters to gallons.
A. 2
gallons
B. 17
gallons
C. 17 gallons
D. 21 gallons