Solve.The thickness of an airport runway's pavement is determined by the weight of the planes using it. The relationship between runway thickness x, in inches, and gross airplane weight y, in thousands of pounds, can be modeled by the equation 
If a loaded cargo plane weighs 300,000 pounds, what must the minimum thickness of the runway be? Round any partial inch up to the nearest whole inch.
A. 11 in.
B. 39 in.
C. 40 in.
D. 12 in.
Answer: D
Mathematics
You might also like to view...
Perform the operations and simplify.?
?
?
A. ?
B. ?
C. ?
D. ?
E. ?
Mathematics
Solve.120 is what percent of 240?
A. 40% B. 200% C. 50% D. 100%
Mathematics
Solve the problem.Anne and Nancy use a metal alloy that is 14% copper to make jewelry. How many ounces of an alloy that is 11% copper must be mixed with an alloy that is 16% copper to form 125 ounces of the desired alloy?
A. 50 ounces B. 75 ounces C. 80 ounces D. 52 ounces
Mathematics
Solve.Sue rowed her boat across Lake Bend and back in 3 hours. If her rate returning was 2 mph less than the rate going, and if the distance each way was 7 miles, find her rate going.
A. 1.5 mph B. 3.7 mph C. 5.5 mph D. 5.9 mph
Mathematics