Solve the problem.Find the magnitude of the torque in foot-pounds at point P for the following lever:
= 7 in. and 
= 20 lb
A. 11.41 ft-lb
B. 10.57 ft-lb
C. 4.93 ft-lb
D. 140 ft-lb
Answer: C
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Solve the problem.The barometric pressure p at an altitude of h miles above sea level satisfies the differential equation 
If the pressure at sea level is 29.92 inches of mercury, find the barometric pressure at 27,000 ft.
A. 83.2 in. B. 5.38 in. C. 0.14 in. D. 10.76 in.
Use the unpaid balance method to find the finance charge on the credit card account. The last month's balance and any other transactions are given.Month: May (31 days)Previous month's balance: $960Interest rate: 17%
A. $25.25 B. $695.60 C. $9.57 D. $9.85
Answer the question.List the first four multiples of 5x and of 9x
A. 25x, 30x, 35x, 40x; 45x, 54x, 63x, 72x
B. 5, 
, 
, 
; 9, 
, 3, 
C. 5x, 10x, 15x, 20x; 9x, 18x, 27x, 36x
D. 5, 25, 125, 625; 9, 81, 729, 6561
Simplify.
A. 5 B. 25 C. 1 D. -5