15 points

calculate the muscular work completed by four men. four men carry 20 boxes each up a ramp as shown. each box weighs 5 pounds. remember that muscular work is calculated by multiplying the weight by the vertical distance. in the calculation, disregard the weight of the men and consider only the muscular work done carrying the boxes.

a. 600 ft lbs

b. 1200 ft lbs

c. 2400 ft lbs

d. 3600 ft lbs

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 : )