Solve the problem.To model the actual speed s (in miles per hour) in an accident which left a skid mark of l feet, police use the formula s = S 
,where S is the test-car speed (in miles per hour) and L is the test-skid length (in feet). Find the speed S = 45 mph, 
and L = 100 ft. Round your answer to the nearest unit.
A. 55 mph
B. 68 mph
C. 37 mph
D. 95 mph
Answer: A
Mathematics
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Provide an appropriate response.The area of a rectangle where length = 37 and width = 39 m is:
A. 783 m2 B. 323 m2 C. 1,443 m2 D. 63 m2
Mathematics
Estimate by using front-end rounding. 
A. 435 B. 700 C. 500 D. 400
Mathematics
Multiply.-96.397 × 100
A. -9639.7 B. -9589.7 C. -983.97 D. -963.97
Mathematics
Solve the problem.An artifact is discovered at a certain site. If it has 61% of the carbon-14 it originally contained, what is the approximate age of the artifact? (carbon-14 decays at the rate of 0.012% annually.)
A. 4119 yr B. 3250 yr C. 1789 yr D. 5083 yr
Mathematics