Solve the problem. Round to the nearest tenth, if necessary.A jet plane traveling at a constant speed goes 1200 mi with the wind, then turns around and travels for 1000 mi against the wind. If the speed of the wind is a constant 50 mph, and the total flight took 4 hours, find the speed of the plane.
A. 550 mph
B. 525 mph
C. 605 mph
D. 435 mph
Answer: A
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Chooce the most reasonable metric measure.a truck's height
A. millimeter B. kilometer C. meter D. dekameter
Solve the equation. If the solutions involve square roots, give both the exact solutions and the approximate solutions to three decimal places.
= 
+ 
A. - 
B. 
C. 3
D. -3
Graph the function f(x) over the given interval. Partition the interval into 4 subintervals of equal length. Then add to your sketch the rectangles associated with the Riemann sum 
, using the indicated point in the kth subinterval for ck.f(x) = -4x2, [0, 4], left-hand endpoint
A. 
B. 
C. 
D. 
Answer the question.The following table gives the electricity usage (in kilowatt hours) for the Peters family for six months.
What is the average electricity usage for the months February through May?
A. 960.04 kwh B. 959.25 kwh C. 956.232 kwh D. 957.26 kwh