An air traffic controller is using radar to track the position of an airplane moving due east at a constant speed. The table below shows the position of the aircraft on her screen, relative to the left edge, and the time at which the aircraft was spotted. Position (cm) 0 0.70 1.40 2.10 3.50 Time (minutes) 0 0.25 0.50 0.75 1.25 If each centimeter on the screen represents 5 kilometers, what is the speed that the airplane is flying in kilometers per hour? kilometers per hour

First, think of what you know. you know that the number t the end of the equation will need to be subtracted because it is the money he lost from buying the lawn mower. and your first two weeks have negative profit, so that tells you that c and d are wrong. now you can plug any of the weeks into a and b to see which one works. i'll start with plugging week 1 into a.this isn't right because it says your answer for week one should be -90.so now we need to try the same thing with b.this one got you the right answer, (sometimes if you only check with one of the weeks multiple will work so you need to check with more of the weeks, but it worked out fine here)this means that b is the correct answer.let me know if you need more clarification. i hope this : )

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