A heavy rope, 40 ft long, weighs 0.7 lb/ft and hangs over the edge of a building 110 ft high. How much work is done in pulling the rope to the top of the building?
a. 670 ft-lb
b. 650 ft-lb
c. 560 ft-lb
d. 630 ft-lb
e. 660 ft-lb
c. 560 ft-lb
Mathematics
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Use DeMoivre's Theorem to write the expression in rectangular form.(1 + i)20
A. 1024i B. -1024 C. -1024i D. 1024
Mathematics
Solve the problem.Jason is paid $500 per month plus a commission of 4% of the first $2,500 of his sales, and 6% of his sales over $2,500. Last month his sales totaled 
Find Jason's wages for the month.
A. $3004.00 B. $1539.00 C. $2065.00 D. $1389.00
Mathematics
Multiply.(-5p2r)(5p2qr3)(-2q3r2)
A. - 50p3q5r6 B. 50p4q4r6 C. - 50p4q4r6 D. 50p3q5r6
Mathematics
If possible, evaluate the expression by hand. If not, approximate the answer to the nearest hundredth.167/4
A. 131
B. 
C. 16,384
D. 128
Mathematics